In trying to reconcile a contempt for falsity with a proven ability to deceive, I have settled on the dictum, "Nothing deceives better than the truth." This dictum can be circumambulated in two ways. The first way suggests that lying is a crude form of deception, not only unethical but inept, and that if I wish those who encounter me to develop wrong ideas of me then nothing will serve that wish better than honesty. People have good noses for unusual efforts on my part to shape their perceptions, but are comparatively unaware of their own misapprehensions. The second way says that to find the truth, I should seek out those areas in which people are best deceived, advice which sums up much of psychoanalysis. Where people most willfully lie to themselves, most forcefully repress themselves, or most violently project and externalize, I may find good insights into their nature.
It only today occurred to me that there is another idea of deception, corresponding to a different type of trickster, which says that you have yet to fully exercise your powers of deception until you have tricked yourself.