The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people are full of doubts.

The whole problem with the world is that fools and fanatics are always so certain of themselves, and wiser people so full of doubts.

The whole problem with the world is that fools and fanatics are always so sure of themselves and wiser people so full of doubt.

A fanatic is one who sticks to his guns whether they're loaded or not.

People are wiser than we are willing to attribute to them.

The world is full of fools; and he who would not wish to see one, must not only shut himself up alone, but must also break his looking-glass.