To acquire knowledge, one must study, but to acquire wisdom, one must observe.

Failure will never overtake me if my determination to succeed is strong enough.

Whenever you do a thing, act as if all the world were watching.

The knowledge of yourself will preserve you from vanity.

Do what you can, with what you have, where you are.

Losers live in the past. Winners learn from the past and enjoy working in the present toward the future.

The true sign of intelligence is not knowledge but imagination.

A man only learns in two ways, one by reading, and the other by association with smarter people.

Where there is no vision, there is no hope.

As knowledge increases, wonder deepens.