Rule No. 1: Never lose money. Rule No. 2: Never forget Rule No. 1.

Investors
Warren Buffett
Born in 1930 in Omaha, Warren Buffett evolved Graham's value investing and built Berkshire Hathaway into a global conglomerate with ~20% annual returns over fifty years. He pledged 99% of his fortune to charity.
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Warren Buffett's Other Quotes
Be fearful when others are greedy, and greedy when others are fearful.
Price is what you pay. Value is what you get.
It's far better to buy a wonderful company at a fair price than a fair company at a wonderful price.
Our favorite holding period is forever.
Risk comes from not knowing what you're doing.
Related Quotes
By failing to prepare, you are preparing to fail.
-- Benjamin Franklin
Conceive optimistically, plan pessimistically, execute optimistically.
-- Kazuo Inamori
The most important thing is being attentive to cycles.
-- Howard Marks
You can't predict. You can prepare.
-- Howard Marks
I try to invest in companies where the downside is limited and the upside is significant.
-- Bruce Berkowitz
I try to learn from every mistake. When we lose money, I want to understand exactly why we lost it.
-- David Einhorn