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.

We do not know anything - this is the first. Therefore, we should be very modest - this is the second. Not to claim that we do know when we do not - this is the third. That's the kind of attitude I'd like to popularize. There is little hope for success.

Our aim must be to make our successive mistakes as quickly as possible. To speed up evolution.

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

There is no pure, disinterested, theory-free observation.

Those who promise us paradise on earth never produced anything but a hell.

All life is problem solving