Note that this disposition seems genuinely to be a disposition to be trustworthy, not merely to act in a trustworthy manner, although the latter may often be entailed. A comparable disposition to be trusting seems much less likely, because its range is radically larger than that of any disposition to be trustworthy. If I am always trusting, I will be the gullible target of increasingly many people. After losing repeatedly from my excessive trust, I will have overwhelming incentive to alter my disposition. I might still have a risk-taking disposition, but this will be more limited in that it will not lead me to take egregious risks. Hence trust and trustworthiness are not analogous or symmetrical in this respect, because one can be disposed to trustworthiness without significant risk.

Russell Hardin, Trust and Trustworthiness, loc. 211