Nature is the greatest teacher and I learn from her best when others are asleep. In the still dark hours before sunrise God tells me of the plans I am to fulfill.

He who puts a product upon the market as it demands, controls that market, regardless of color. It is simply a survival of the fittest.

To those who have as yet not learned the secret of true happiness, which is the joy of coming into the closest relationship with the Maker and Preserver of all things: begin now to study the little things in your own door yard.

Start where you are, with what you have. Make something of it and never be satisfied.

My work is that of keeping every operation down (in size) so that the farmer and the man farthest down can get hold of it.

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.

My purpose alone must be God's purpose.