“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.”

“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.”

“Fruits that blossom first will first be ripe.”

“Adult males are what their moms designed them.”

“Every mind is different; and the more it is unfolded, the more pronounced is that difference.”