Genuine philosophical problems are always rooted outside philosophy and they die if these roots decay.

The question is not how to get good people to rule; THE QUESTION IS: HOW TO STOP THE POWERFUL from doing as much damage as they can to us.

The more we learn about the world, and the deeper our learning, the more conscious, specific, and articulate will be our knowledge of what we do not know, our knowledge of our ignorance

Every genuine test of a theory is an attempt to falsify it, or to refute it.

The growth of our knowledge is the result of a process closely resembling what Darwin called 'natural selection'; that is, the natural selection of hypotheses: our knowledge consists, at every moment, of those hypotheses which have shown their (comparative) fitness by surviving so far in their struggle for existence, a competitive struggle which eliminates those hypotheses which are unfit.

Historically speaking all - or very nearly all - scientific theories originate from myths.

Now this principle of induction cannot be a purely logical truth like a tautology or an analytic statement. . . .