Don't waste your life in doubts and fears: Spend yourself on the work before you, well assured that the right performance of this hour's duties will be the best preparation for the hours or ages that follow it.

Follow your honest convictions, and stay strong.

There are two rules for success. 1) Never tell everything you know.

In all things that you do, consider the end.

Be undeniably good. No marketing effort or social media buzzword can be a substitute for that.

It takes 20 years to build a reputation and five minutes to ruin it. If you think about that, you’ll do things differently.

A general is just as good or just as bad as the troops under his command make him.

A jade stone is useless before it is processed; a man is good-for-nothing until he is educated.

I have not failed. I’ve just found 10,000 ways that won’t work.

Running a start-up is like eating glass. You just start to like the taste of your own blood.

I avoid looking forward or backward, and try to keep looking upward.

If everything seems under control, you’re just not going fast enough.

One day your life will flash before your eyes. Make sure it is worth watching

I treat business a bit like a computer game. I count money as points. I’m doing really well: making lots of money and lots of points.

No man was ever wise by chance.

Every time I took these bigger risks, the opportunity for a bigger payout was always there.