The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends upon the unreasonable man.
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.
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.
Never[enter] into dispute or argument with another. I never yet saw an instance ofone of two disputants convincing the other by argument. I have seen many ontheir getting warm, becoming rude and shooting one another.