I always tried to turn every disaster into an opportunity.

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.

The secret of success is to get up early, work late and strike oil.

It is very important to remember what other people tell you, not so much what you yourself already know.

Giving should be entered into in just the same way as investing. Giving is investing.

I cheat my boys every chance I get. I trade with the boys and skin 'em and I just beat 'em every time I can. I want to make 'em sharp.

Probably the greatest single obstacle to the progress and happiness of the American people lies in the willingness of so many men to invest their time and money in multiplying competitive industries instead of opening up new fields, and putting their money into lines of industry and development that are needed.