Stupidity is a personal achievement which transcends national boundaries.

If A is a success in life, then A equals x plus y plus z. Work is x; y is play; and z is keeping your mouth shut

If I would be a young man again and had to decide how to make my living, I would not try to become a scientist or scholar or teacher. I would rather choose to be a plumber or a peddler in hope to find that modest degree of independence still available under present circumstances.

Education is not received. It is achieved.

I no longer believed in the known God of the Bible, but rather in the mysterious God expressed in nature.

I think that only daring speculation can lead us further and not accumulation of facts.

By academic freedom I understand the right to search for truth and to publish and teach what one holds to be true. This right implies also a duty: one must not conceal any part of what on has recognized to be true. It is evident that any restriction on academic freedom acts in such a way as to hamper the dissemination of knowledge among the people and thereby impedes national judgment and action.