For fools rush in where angels fear to tread.

What is life but a series of inspired follies? The difficulty is to find them to do. — George Bernard Shaw

There is no chance for old fools. — Cree Indian proverb

A fool always finds one still more foolish to admire him. — Nicolas Boileau

You men think old men are fools  but old men know young men are the fools. — George Chapman

A fool and his money are soon parted. — English proverb

The fool hath said in his heart  There is no God. — Bible

A learned fool is more foolish than an ignorant fool. — Moliere

Even a fool  when he holdeth his peace  is counted wise. — Bible

It is in the half fools and the half wise that the greatest danger lies. — Goethe