If the human race wishes to have a prolonged and indefinite period of material prosperity, they have only got to behave in a peaceful and helpful way toward one another.

Sir Winston Churchill

Common sense is not so common.

Voltaire

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

Mark Twain

When you blame others, you give up your power to change.

Douglas Adams 

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

Zig Ziglar

Courage is what it takes to stand up and speak; courage is also what it takes to sit down and listen.

Sir Winston Churchill

Success is a science; if you have the conditions, you get the result.

Oscar Wilde

Is there anyone so wise as to learn by the experience of others?

Voltaire