To persuade a man, convince him not that the idea is sound but that it is his own.
Error is boundless.
Nor hope nor doubt,
Though both be groundless,
Will average out.
Opportunity, legal status, result — we are all apparently obliged to believe in the equality of something.
The opposite of hypocrisy is overconfidence.
If you publicize your mistakes, eventually someone will say they are remembered because you were right so often.
Those who trust their first thought sometimes have a second, but rarely a third.
Vehemence is the infallible sign of opinion.
The admission that irreparably damages the argument is introduced, by convention, with “of course”.
The hedgehog, who knows one big thing, has many disciples, and the fox, who knows many things, has none.
99% sure is about 45% correct.
The erroneous belief is the minor problem, the excessive conviction the major one.