Superior sales and distribution by itself can create a monopoly, even with no product differentiation. The converse is not true. No matter how strong your product-even if it easily fits into already established habits and anybody who tries it likes it immediately-you must still support it with a strong distribution plan.

The best entrepreneurs know this: every great business is built around a secret that’s hidden from the outside. A great company is a conspiracy to change the world; when you share your secret, the recipient becomes a fellow conspirator.

Anti-aging is an extremely under-explored field.

If you think your initial market might be too big, it almost certainly is.

Great tech opportunities happen only once.

Consider the trivial but revealing hallmarks of urban hipsterdom: faux vintage photography, the handlebar mustache, and vinyl record players all hark back to an earlier time when people were still optimistic about the future. If everything worth doing has already been done, you may as well feign an allergy to achievement and become a barista.

A true bubble is when something is overvalued and intensely believed. Education may be the only thing people still believe in in the United States. To question education is really dangerous. It is the absolute taboo. It's like telling the world there's no Santa Claus.