A vacuum of ideas affects people differently than a vacuum of air, otherwise readers of books would be constantly collapsing.

Everyone is a genius at least once a year. The real geniuses simply have their bright ideas closer together.

With most men, unbelief in one thing springs from blind belief in another.

It is almost everywhere the case that soon after it is begotten the greater part of human wisdom is laid to rest in repositories.

Do not say hypothesis, and even less theory: say way of thinking.

First there is a time when we believe everything, then for a little while we believe with discrimination, then we believe nothing whatever, and then we believe everything again - and, moreover, give reasons why we believe.

The great rule: If the little bit you have is nothing special in itself, at least find a way of saying it that is a little bit special.