Aristotle (Eudemian Ethics 8.2.123b.12–16) notes that “there is no stable friendship [philia] without trust [pistis], and there is no trust without time.” We may suppose that the point of time in this claim is to have opportunity for enough interactions—including interactions into the future—on which to ground trust. … According to Paul Bullen (personal communication, 26 February 1998), Aristotle uses the word “philia” to cover more than just what we would call friendship. It can include any harmonious relationship, even impersonal ones based purely on selfinterest. Depending on the context, “pistis” can mean belief, confidence, and rhetorical proof, as well as trust. If pistis is trust for Aristotle, then evidently it is a cognitive term.

DEFINE: Clarifies that Aristotle's 'pistis' is a cognitive term encompassing belief, confidence, and rhetorical proof, not merely emotional trust; also notes 'philia' spans all harmonious relationships including self-interested ones.

Russell Hardin, Trust and Trustworthiness, loc. 906