It is not possible to demand the trust of others; trust can only be offered and accepted. It is for this reason that demands to trust cannot start trust relationships off. This can only be done by what we have called an advance. The initiator may confer trust, or perhaps utilize an opportunity arisen by chance, to show himself trustworthy (for instance by returning a lost object which he has found). The truster sees in his own vulnerability the instrument whereby a trust relationship may be created.

Niklas Luhmann, Trust and Power, loc. 197