Plato felt that a complete reconstruction of society's political program was needed.

Better our hypotheses die for our errors than ourselves.

It is the rule which says that the other rules of scientific procedure must be designed in such a way that they do not protect any statement in science against falsification.

I have spoken to Einstein and he admitted to me that his theory was in fact no different from the one of Parmenides.

I have come to the conclusion that Darwinism is not a testable scientific theory, but a metaphysical research programme.

A system is empirical or scientific only if it is capable of being tested by experience. These considerations suggest that not the verifiability but the falsifiability of a system is to be taken as a criterion of demarcation... It must be possible for an empirical or scientific system to be refuted by experience.

[To] interpret Parmenides as a Kant before Kant ... this is exactly what we must do.