Onecomes to believe whatever one repeats to oneself sufficiently often, whetherthe statement be true or false. It comes to be dominating thought in one'smind.
The exercise of power is determined by thousands ofinteractions between the world of the powerful and that of the powerless, allthe more so because these worlds are never divided by a sharp line: everyonehas a small part of himself in both.
Neverforget the power of silence, that massively disconcerting pause which goes onand on and may at last induce an opponent to babble and backtrack nervously.
If you are distressed by anything external, the pain isnot due to the thing itself but to your own estimate of it; and this you havethe power to revoke at any moment.