All right, here is one I have been pondering, from an actual situation I have been dealing with for a while, and trying to express in written form.

* A good gentleman is up front about or sets aside expectations of reciprocity when offering to share with, give to, or help another. *

The actual situation is being pestered to let someone help me, then said person turns around with unannounced, conditional strings attached to the help; this sometimes, from my perspective, involves more than an equitable reciprocation. From that, I decided it would be better to either announce my expectations of reciprocity up front (I'll help you with this, if you help me with that) or simply let go of any expectation, especially on an emotional level, of reciprocity: share, give, help for the sake of sharing, giving, or helping.
A starting point, not an end-all, be-all.