Everybody has a product to sell—no matter whether you’re an employee, a founder, or an investor. It’s true even if your company consists of just you and your computer. Look around. If you don’t see any salespeople, you’re the salesperson.

For Hamlet, greatness means willingness to fight for reasons as thin as an eggshell: anyone would fight for things that matter; true heroes take their personal honor so seriously they will fight for things that don’t matter.

If you can identify a delusional popular belief, you can find what lies hidden behind it: the contrarian truth.

All happy companies are different: each one earns a monopoly by solving a unique problem. All failed companies are the same: they failed to escape competition.

Most people are average. Founders are not. Founders' traits seem to have an inverse normal distribution to them.

Anti-aging is an extremely under-explored field.

Beginning with brand rather than substance is dangerous.