Building and hanging on to an audience is the biggest role of social media.

The art of leadership is saying no, not yes. It is very easy to say yes.

How you climb a mountain is more important than reaching the top.

The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts.

To do great things is difficult; but to command great things is more difficult.

Insist on yourself. Never imitate.

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

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

Entrepreneurship is living a few years of your life like most people won’t, so that you can spend the rest of your life like most people can’t.