The widely attributed quote “We are what we repeatedly do. Excellence, then, is not an act, but a habit” represents philosopher Will Durant’s masterful distillation of Aristotelian virtue ethics from the Nicomachean Ethics. This comprehensive analysis explores how Durant’s interpretation of Aristotle’s concept of habituation (hexis) has become one of the most influential statements about character development and human excellence in modern thought. Drawing upon ancient philosophy, contemporary psychology, neuroscience, and behavioral economics, we examine how the principle of habit formation underlies both moral development and practical achievement across all domains of human endeavor. Through investigation of Aristotle’s original teachings, the historical development of virtue ethics, and contemporary research on habit formation and expertise development, this work illuminates the enduring relevance of this insight for understanding how human beings can cultivate excellence through deliberate practice and consistent action.
1. Introduction: The Architecture of Human Excellence
When philosopher Will Durant wrote his interpretation of Aristotelian ethics—”We are what we repeatedly do. Excellence, then, is not an act, but a habit”—he captured one of the most profound insights about human nature and the development of character [1]. This statement, while not a direct quotation from Aristotle, represents a faithful distillation of the central teaching of the Nicomachean Ethics: that virtue and excellence are not innate qualities or momentary achievements but the result of consistent practice and habituation over time [2].
Durant’s formulation operates on multiple levels of human experience [3]. At the psychological level, it recognizes that our identity is shaped not by our intentions or occasional actions but by the patterns of behavior we consistently repeat [4]. At the moral level, it suggests that virtue is not a natural endowment but a skill that must be developed through practice [5]. At the practical level, it provides a framework for understanding how excellence in any domain—from athletics to artistry to leadership—is achieved through deliberate and sustained effort [6].
The insight challenges common assumptions about talent, character, and achievement [7]. Rather than viewing excellence as the result of innate gifts or sudden inspiration, it locates the source of human greatness in the mundane but powerful process of habit formation [8]. This perspective has profound implications for education, personal development, and our understanding of human potential [9].
The statement also reveals the democratic nature of excellence [10]. If virtue and achievement are the products of habit rather than birth, then they are potentially accessible to anyone willing to engage in the necessary practice [11]. This insight has inspired countless individuals to pursue excellence in their chosen fields and has influenced educational philosophies that emphasize effort over ability [12].
2. Aristotle and the Foundations of Virtue Ethics
Aristotle (384-322 BCE) developed his understanding of virtue and character formation in response to the philosophical challenges of his time [13]. Writing in the aftermath of the Peloponnesian War and the execution of Socrates, Aristotle sought to provide a practical philosophy that could guide individuals toward flourishing (eudaimonia) in an uncertain world [14]. His approach differed from both Platonic idealism and Sophistic relativism by grounding ethics in the observable patterns of human behavior and the cultivation of character [15].
The Nicomachean Ethics, named after Aristotle’s son Nicomachus, presents virtue as a disposition (hexis) that is developed through habituation (habituation) [16]. Aristotle argues that moral virtues are not innate but are acquired through practice, much like skills in crafts or athletics [17]. Just as one becomes a skilled musician by repeatedly playing music, one becomes virtuous by repeatedly acting virtuously [18].
Aristotle’s concept of the “golden mean” illustrates how virtue is developed through practice [19]. Courage, for example, is the mean between the extremes of cowardice and recklessness [20]. One develops courage not by understanding its definition but by repeatedly acting courageously in appropriate circumstances [21]. Through this practice, courage becomes a stable disposition that characterizes the person’s approach to challenging situations [22].
The philosopher’s emphasis on habituation reflects his understanding of human psychology [23]. Aristotle recognized that human beings are creatures of habit whose characters are shaped by the patterns of behavior they establish over time [24]. This insight anticipated modern research on neuroplasticity and the formation of neural pathways through repetitive action [25].
3. Will Durant’s Interpretation and Its Impact
Will Durant (1885-1981) encountered Aristotle’s teachings during his philosophical education and was struck by their practical relevance for modern life [26]. In his 1926 work “The Story of Philosophy,” Durant sought to make classical philosophical insights accessible to general readers [27]. His paraphrase of Aristotelian virtue ethics—”We are what we repeatedly do”—became one of the most widely quoted philosophical statements of the 20th century [28].
Durant’s formulation captures the essence of Aristotle’s teaching while making it immediately comprehensible to contemporary audiences [29]. The statement’s power lies in its simplicity and its direct challenge to common assumptions about character and achievement [30]. By emphasizing repetition and habit, Durant highlighted the democratic and practical nature of virtue development [31].
The widespread adoption of Durant’s formulation reflects its resonance with American cultural values of self-improvement and meritocracy [32]. In a society that celebrates individual achievement and upward mobility, the idea that excellence is accessible through consistent effort rather than inherited privilege has particular appeal [33]. The quote has been embraced by educators, coaches, business leaders, and self-help authors as a foundational principle for human development [34].
However, the attribution of this quote directly to Aristotle, while understandable, has sometimes obscured the interpretive work that Durant performed [35]. Aristotle’s actual discussion of habituation is more complex and nuanced than Durant’s concise formulation suggests [36]. Understanding both the original teaching and its modern interpretation provides a richer appreciation of the insight’s depth and applicability [37].
4. The Science of Habit Formation
Contemporary neuroscience and psychology have provided extensive validation for the Aristotelian insight that Durant captured [38]. Research on habit formation reveals the neurological mechanisms through which repeated behaviors become automatic and shape both brain structure and personal identity [39].
The basal ganglia, a group of brain structures involved in motor control and learning, play a crucial role in habit formation [40]. When behaviors are repeated consistently, neural pathways in this region become strengthened, making the behaviors more automatic and less dependent on conscious decision-making [41]. This process, known as “chunking,” allows complex sequences of actions to be performed with minimal cognitive effort [42].
Studies of neuroplasticity demonstrate that the brain’s structure literally changes in response to repeated behaviors [43]. Musicians, for example, show enlarged areas of the brain associated with fine motor control and auditory processing [44]. Athletes develop enhanced neural connections in regions related to balance, coordination, and spatial awareness [45]. These changes reflect the physical embodiment of Aristotle’s insight that we become what we repeatedly do [46].
The formation of habits also involves changes in neurotransmitter systems, particularly dopamine pathways associated with reward and motivation [47]. As behaviors become habitual, they require less conscious motivation to maintain, freeing mental resources for other activities [48]. This efficiency explains why habits can be both powerful tools for positive change and difficult patterns to break when they become destructive [49].
5. Excellence Through Deliberate Practice
The concept of deliberate practice, developed by psychologist Anders Ericsson, provides a modern framework for understanding how excellence is achieved through repetition [50]. Ericsson’s research on expert performance across diverse domains—from chess to music to sports—reveals consistent patterns that align with Aristotelian insights about habituation [51].
Deliberate practice involves focused, goal-oriented repetition of specific skills with immediate feedback and continuous adjustment [52]. Unlike mere repetition, deliberate practice requires sustained attention and effort to improve performance [53]. This process gradually builds the complex skills and knowledge structures that characterize expert performance [54].
The “10,000-hour rule,” popularized by Malcolm Gladwell, represents a simplified version of Ericsson’s findings about the time required to achieve expertise [55]. While the exact number varies by domain and individual, the underlying principle remains consistent: excellence requires sustained, focused practice over extended periods [56]. This finding validates Aristotle’s insight that virtue and skill are developed through habituation rather than innate talent [57].
Research on expertise also reveals the importance of progressive challenge and adaptation [58]. As skills develop, practice must become more sophisticated to continue driving improvement [59]. This process mirrors Aristotle’s understanding that virtue development requires increasingly complex moral challenges and responses [60].
6. Character Development and Moral Habituation
The application of habit formation principles to moral development represents one of the most significant aspects of Aristotelian virtue ethics [61]. Contemporary research in moral psychology has validated many of Aristotle’s insights about how character is formed through repeated moral actions [62].
Studies of moral development show that ethical behavior is largely automatic and habitual rather than the result of conscious deliberation [63]. People who consistently act with honesty, compassion, or courage develop neural and psychological patterns that make such behaviors more likely in future situations [64]. This process creates what psychologists call “moral identity”—a stable sense of self as a moral person [65].
The development of moral habits also involves the cultivation of emotional responses [66]. Aristotle recognized that virtue involves not just right action but right feeling—being angry at the right things, feeling compassion for appropriate objects, experiencing pride in worthy achievements [67]. Modern research on emotional regulation confirms that these responses can be shaped through practice and habituation [68].
Character education programs that emphasize repeated practice of virtuous behaviors have shown effectiveness in promoting moral development [69]. These programs recognize that moral knowledge alone is insufficient; character must be developed through consistent practice in real-world situations [70]. This approach reflects the Aristotelian insight that virtue is a matter of habit rather than understanding [71].
7. Applications in Education and Human Development
The principle that excellence is a habit rather than an act has profound implications for educational practice and human development [72]. Educational approaches that emphasize effort, practice, and growth rather than fixed ability have shown superior results in promoting student achievement and motivation [73].
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