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.

In: Rene Vallery-Radot, The Life of Pasteur, Chapter XIV (pp. 450-451), Doubleday, Doran & Company, Inc. 1928