I must be willing to give up what I am in order to become what I will be.

Those who believe that politics and religion do not mix, understand neither.

If the workers of this world, men and women, decide not to manufacture and transport ammunition, it would end war for all time. We must do that. Dedicate our lives to drying up the source of war; ammunition factories.

It is only to the individual that a soul is given.

As our circle of knowledge expands, so does the circumference of darkness surrounding it.

What a deep faith in the rationality of the structure of the world and what a longing to understand even a small glimpse of the reason revealed in the world there must have been in Kepler and Newton to enable them to unravel the mechanism of the heavens in long years of lonely work!

Education is only a ladder to gather fruit from the tree of knowledge, not the fruit itself