A failure teaches you that something can't be done-that way.

The Bible of nature is the best damn Bible in the world. Its laws are perfect and grand, and all the prayers in the world can't change them. There is intelligence and law in this world, and there may be supreme intelligence and law, but so far as the religion of the day is concerned, it is all a damned fake.

The dove is my emblem.

My main purpose in life is to make enough money to create ever more inventions…. The dove is my emblem…. I want to save and advance human life, not destroy it…. I am proud of the fact that I have never invented weapons to kill….

My principal business is giving commercial value to the brilliant - but misdirected - ideas of others.

There is always a better way.

I have friends in overalls whose friendship I would not swap for the favor of the kings of the world.