There are two kinds of people who lose money!

We have two classes of forecasters: Those who don’t know— and those who don’t know they don’t know.
JOHN KENNETH GALBRAITH

It’s frightening to think that you might not know something, but more frightening to think that, by and large,
the world is run by people who have faith that they know exactly what’s going on.
AMOS TVERSKY

There are two kinds of people who lose money: those who know nothing and those who know everything.
HENRY KAUFMAN

There are two kinds of people who lose money!