Declare the past, diagnose the present, foretell the future.

Hippocrates of Cos

A happy soul is the best shield for a cruel world.

Atticus

Knowing others is intelligence; knowing yourself is true wisdom. Mastering others is strength; mastering yourself is true power.

Lao Tzu

Simplicity and complexity need each other.

John Maeda

Travel is fatal to prejudice, bigotry, and narrow-mindedness.

Mark Twain

He experiences himself, his thoughts and feeling as something separated from the rest, a kind of optical delusion of his consciousness.

Albert Einstein