It is unwise to be too sure of one's own wisdom. It is healthy to be reminded that the strongest might weaken and the wisest might err.

Mahatma Gandhi

A person with a new idea is a crank until the idea succeeds.

Mark Twain

Always do right. This will gratify some people and astonish the rest.

Mark Twain

Expect the best. Prepare for the worst. Capitalize on what comes.

Zig Ziglar

A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty.

Sir Winston Churchill

Attitude is a little thing that makes a big difference.

Sir Winston Churchill

Common sense is not so common.

Voltaire