Genius is one percent inspiration, ninety-nine percent perspiration.

The dove is my emblem.

I do not believe in the God of the theologians; but that there is a Supreme Intelligence I do not doubt.

The man who doesn’t make up his mind to cultivate the habit of thinking misses the greatest pleasure in life.

The doctor of the future will no longer treat the human frame with drugs, but rather will cure and prevent disease with nutrition.

The injurious agent in cigarettes comes principally from the burning paper wrapper. The substance thereby formed is called "acrolein." It has a violent action on the nerve centers, producing degeneration of the cells of the brain, which is quite rapid among boys. Unlike most narcotics, this degeneration is permanent and uncontrollable. I employ no person who smokes cigarettes.

Anything that won't sell, I don't want to invent. Its sale is proof of utility, and utility is success.