Within the Legalist tradition, human beings are regarded as fundamentally self‑interested, driven by desires for profit, comfort, and personal gain. Rather than assuming an innate tendency toward goodness, this view emphasizes that people naturally incline toward selfish and even antisocial behavior when left to their own devices. Self‑interest is treated as the primary motivator of action, and human nature is considered resistant to transformation through moral education or cultivation of virtue. From this perspective, expectations that people will spontaneously act for the common good are seen as naive.

Because of this assessment of human nature, Legalism places little trust in morality, benevolence, or ethical exhortation as tools of governance. Appeals to inner virtue or conscience are judged unreliable, especially when applied to large populations. Moral teachings may have rhetorical value, but they are not believed to restrain selfish impulses in a consistent or predictable way. What matters is not the refinement of character but the predictable shaping of outward behavior.

Legalist thinkers therefore turn to external structures—above all, law, reward, and punishment—as the primary means of guiding conduct. People are understood to respond most reliably to clear incentives: they seek benefit and avoid harm. On this basis, Legalism advocates strict, uniformly applied laws backed by severe penalties and carefully calibrated rewards. The fear of punishment and the desire for advantage become the levers by which rulers channel private self‑interest into patterns that support social stability and state power.

This approach also entails a deliberate de‑emphasis on individual differences of character or intention. Legalism does not rely on discerning who is virtuous and who is not, but on constructing a legal framework that elicits compliant behavior regardless of inner disposition. Administrative efficiency is achieved by bypassing moral judgment in favor of impersonal, clearly defined rules that apply to all. Social order, in this vision, rests not on the flowering of inner virtue but on the steady pressure of external control.