Look for companies with high profit margins.

If you hit a hole in one every hole, you wouldn’t play golf for very long.

If at first you do succeed, quit trying on investing.

What an investor needs is the ability to correctly evaluate selected businesses. Note that word “selected”: You don't have to be an expert on every company, or even many. You only have to be able to evaluate companies within your circle of competence. The size of that circle is not very important; knowing its boundaries, however, is vital.

People went crazy with tulip bulbs. They went crazy with the South Sea Bubble, they went crazy internet stocks, they went crazy with the uranium stocks back when I was first getting started.

It's almost impossible to overpay the truly extraordinary CEO... but the species is rare.

Don't risk what is important to you, to get what is not important to you.