The game of science is, in principle, without end. He who decides one day that scientific statements do not call for any further test, and that they can be regarded as finally verified, retires from the game.

A principle of induction would be a statement with the help of which we could put inductive inferences into a logically acceptable form. In the eyes of the uph…

If in this book harsh words are spoken about some of the greatest among the intellectual leaders of mankind, my motive is not, I hope, the wish to belittle the…

No matter how many instances of white swans we may have observed, this does not justify the conclusion that all swans are white.

Scientific knowledge is in perpetual evolution; it finds itself changed from one day to the next.

I believe in intuition and inspiration. Imagination is more important than knowledge. For knowledge is limited, whereas imagination embraces the entire world, …

False facts are highly injurious to the progress of science, for they often endure long; but false views, if supported by some evidence, do little harm, for ev…