I love to think of nature as an unlimited broadcasting station, through which God speaks to us every hour, if we will only tune in.

The secret of my success? It is simple. It is found in the Bible.

Education is the key to unlock the golden door of freedom.

I went to the trash pile at Tuskegee Institute and started my laboratory with bottles, old fruit jars and any other thing I found I could use. ... [The early efforts were] worked out almost wholly on top of my flat topped writing desk and with teacups, glasses, bottles and reagents I made myself.

No individual has any right to come into the world and go out of it without leaving behind him distinct and legitimate reasons for having passed through it.

The beating on the tail of the snake may stop his progress a little, but the more vital parts must be struck before his poisonous death-dealing venom will be wiped out.

Let us rejoice at the many unexplored fields in which there is unlimited fame and fortune to the successful explorer . . .