You have a viable business only if your product is either better or cheaper than the alternatives. If it’s not one or the other, you might make some money at first, but it’s not a sustainable business.

You should always stay hungry. Stay hungry, so you can eat.

We can do anything we want to do if we stick to it long enough.

A wise man learns by the mistakes of others, a fool by his own.

A goal is a dream with a deadline.

Success is a lousy teacher. It seduces smart people into thinking they can’t lose.

The art of being wise is knowing what to overlook.