“Giving is the secret to a healthy life. Not necessarily money, but whatever a person has to give of encouragement, sympathy, and understanding.”

“The way to make money is to buy when blood is running in the streets.”

“Good leadership consists of showing average people how to do the work of superior people.”

“If your only goal is to become rich, you will never achieve it.”

“I'm glad I wrote the book to show what I found out about the [ Standard Oil Company]. I'm glad many people read my book and found out the truth.”

“If a man fasten his attention on a single aspect of truth and apply himself to that alone for a long time, the truth becomes distorted and not itself but falsehood.”

“The objection to conforming to usages that have become dead to you is, that it scatters your force.”

“The one prudence in life is concentration; the one evil is dissipation: and it makes no difference whether our dissipations are coarse or fine; property and its cares, friends and a social habit, or politics, or music, or feasting. Everything is good which takes away one plaything and delusion more, and drives us home to add one stroke of faithful work.”