Planning is not just guessing, it is harmful guessing, because it is a waste of time. All the time you spend doing your five year plan you can use to worry about tomorrow.

A fool and his money will soon be departed applies equally to venture capitalists as it does to everyone else.

One pattern to help yourself fight the mad dash for the mirage of being done is to think of a good day’s work. Look at the progress of the day towards the end and ask yourself: 'Have I done a good day’s work?'

There's nothing that will bring realism into your world as quickly as realizing that you're out of cash.

If you can't figure out how to make money on three billion in revenue, when exactly will the profit magic be found? Ten billion? Fifty billion?

Fear is ugly because it makes you irrational. Fear makes you jump to conclusions. Fear makes you reactionary.

Facebook has been around for seven years. It has 500 million users. If you can't figure out how to make money off half a billion people in seven years, I'm going to go out on a limb and say you're unlikely to ever do.