Science must begin with myths, and with the criticism of myths.
Good tests kill flawed theories; we remain alive to guess again.
Science may be described as the art of systematic over-simplification.
It is impossible to speak in such a way that you cannot be misunderstood.
Those who promise us paradise on earth never produced anything but a hell.
We have become makers of our fate when we have ceased to pose as its prophets.
Our knowledge can only be finite, while our ignorance must necessarily be infinite.
We hate the very idea that our own ideas may be mistaken, so we cling dogmatically to our conjectures.
No rational argument will have a rational effect on a man who does not want to adopt a rational attitude.
The history of science is everywhere speculative. It is a marvelous hiatory. It makes you proud to be a human being.