The man who remains a fool even in advanced age is really a fool, just as the Indra-Varuna fruit does not become sweet no matter how ripe it might become.

The right combination of guilt and machismo has sent many a fool out into the jungle when he should have stayed home.

It is better to remain silent and be thought a fool, than to open your mouth and remove all doubts.

A fool and his money are soon invited everywhere.

Every fool believes what his teachers tell him, and calls his credulity science or morality as confidently as his father called it divine revelation.

A fool's brain digests philosophy into folly, science into superstition, and art into pedantry. Hence University education.