The only thing that can bring joy is work.
There is a time in every man's life when he looks to his God, when he looks at his life, when he wonders how he will be remembered.
In the realm of scientific observation, luck is granted only to those who are prepared.
Work usually follows will.
Posterity will one day laugh at the foolishness of modern materialistic philosophers.
You bring me the deepest joy that can be felt by a man whose invincible belief is that Science and Peace will triumph over Ignorance and War, that nations will unite, not to destroy, but to build, and that the future will belong to those who will have done most for suffering humanity.