Our knowledge can only be finite, while our ignorance must necessarily be infinite.

You do realize as you grow older that almost nobody knows what they are talking about.

We must plan for freedom, and not only for security, if for no other reason than that only freedom can make security secure.

Science must begin with myths, and with the criticism of myths.

The infinite is contained within the finite, just as the name implies: In finite.

In so far as a scientific statement speaks about reality, it must be falsifiable; and in so far as it is not falsifiable, it does not speak about reality.