Thomas Jefferson

 When angry count to ten before you speak. If very angry, count to one hundred. 

- Thomas Jefferson

Saint Augustine

 This is the very perfection of a man, to find out his own imperfections. 

- Saint Augustine

Clarence Darrow

 The trouble with law is lawyers. 

- Clarence Darrow

George Carlin

 If it's true that our species is alone in the universe, then I'd have to say the universe aimed rather low and settled for very little. 

- George Carlin

Dwight D. Eisenhower

 Motivation is the art of getting people to do what you want them to do because they want to do it.

- Dwight D. Eisenhower

Julie Andrews

 Perseverance is failing 19 times and succeeding the 20th.

- Julie Andrews

Denis Waitley

 Learn from the past, set vivid, detailed goals for the future, and live in the only moment of time over which you have any control: now.

- Denis Waitley

Ayn Rand

 A creative man is motivated by the desire to achieve, not by the desire to beat others.

- Ayn Rand

Sophocles

 Always desire to learn something useful.

- Sophocles

Confucius

 By three methods we may learn wisdom: First, by reflection, which is noblest; Second, by imitation, which is easiest; and third by experience, which is the bitterest.

- Confucius

Robert Louis Stevenson

 To travel hopefully is a better thing than to arrive.

- Robert Louis Stevenson

Ambrose Bierce

 History is an account, mostly false, of events, mostly unimportant, which are brought about by rulers, mostly knaves, and soldiers, mostly fools. 

- Ambrose Bierce

John Kennedy

 With all due respect, I am against dumb. 

- John Kennedy

Stella McCartney

 Everyone can do simple things to make a difference, and every little bit really does count. 

- Stella McCartney

Heraclitus

 Man is most nearly himself when he achieves the seriousness of a child at play. 

- Heraclitus