Incompetence is certainty in the absence of expertise. Overconfidence is certainty in the presence of expertise.

You may hate Hillary Clinton and you may have good reason for hating Hillary Clinton, but Hillary Clinton is one person who even if she's elected will be gone one day and you still have the task of keeping American democracy going.

The difference between a crime of evil and a crime of illness is the difference between a sin and a symptom.

Achievement is talent plus preparation

The Tipping Point is the biography of an idea, and the idea is very simple. It is that the best way to understand the emergence of fashion trends, the ebb and flow of crime waves, or, for that matter, the transformation of unknown books into bestsellers, or the rise of teenage smoking, or the phenomena of word of mouth, or any number of the other mysterious changes that mark everyday life is to think of them as epidemics. Ideas and products and messages and behaviors spread just like viruses do.

There is more going on beneath the surface than we think, and more going on in little, finite moments of time than we would guess.

People can't do much about the fate part, but we can certainly do a lot about the man part.