Travel brings wisdom only to the wise. It renders the ignorant more ignorant than ever.

The truth is like salt. Men want to taste a little, but too much makes everyone sick.

If I don't have wisdom, I can teach you only ignorance.

A crowd has the collective wisdom of individual ignorance.

The more wisdom,knowledge and education you acquire, the less absolute,determined and finite your affirmations become.

The greatest wisdom often consists in ignorance.