Too often the strong, silent man is silent only because he does not know what to say, and is reputed strong only because he has remained silent.

How dreadful are the curses which Mohammedanism lays on its votaries! Besides the fanatical frenzy, which is as dangerous in a man as hydrophobia in a dog, there is a fateful fatalistic apathy.

It is my belief, you cannot deal with the most serious things in the world unless you understand the most amusing.

If you want to discover new oceans, you must first have the courage to leave shore.

Science should be on tap, not on top.

In the past we have had a light which flickered, in the present we have a light which flames, and in the future there will be a light which shines over all the land and sea.

I should have liked to be asked to say what I knew. They always tried to ask what I did not know. When I would have willingly displayed my knowledge, they sought to expose my ignorance. This sort of treatment had only one result: I did not do well in examinations