If it is a terrifying thought that life is at the mercy of the multiplication of these minute bodies [microbes], it is a consoling hope that Science will not always remain powerless before such enemies.

Chance favours the trained mind.

Did you ever observe to whom the accidents happen? Chance favors only the prepared mind.

These are the living springs of great thoughts and great actions. Everything grows clear in the reflections from the Infinite.

The grandeur of the acts of men are measured by the inspiration from which they spring.

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.

If it is a terrifying thought that life is at the mercy of the multiplication of these minute bodies [microbes], it is a consoling hope that Science will not always remain powerless before such enemies.