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

“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.”

“A friendship founded on business is better than a business founded on friendship.”

“Foul cankering rust the hidden treasure frets, but gold that's put to use more gold begets.”

“You cannot make a cheap palace.”

“There is no finer investment for any community than putting milk into babies.”