"To succeed in the world, it is much more necessary to possess the penetration to discern who is a fool, than to discover who is a clever man."

"#1597. Everything is deemed possible except that which is impossible in the nature of things."

"Poetry is the utterance of deep and heartfelt truth. The true poet is very near the oracle."

"When you are loved, you can do anything in creation. When you are loved, there鈥檚 no need at all to understand what鈥檚 happening, because everything happens within you."

"How high must we build these walls Around the fields of paradise?"

"If my theory of relativity is proven successful, Germany will claim me as a German and France will declare that I am a citizen of the world."

"No government can be long secure without formidable opposition."

"To safeguard one's health at the cost of too strict a diet is a tiresome illness indeed."

"We must dare to think about 'unthinkable things' because when things become 'unthinkable' thinking stops and action becomes mindless."

"Grub first, then ethics."

"Dreams never hurt anybody if you keep working right behind the dreams to make as much of them become real as you can."

"Progress isn't made by early risers. It's made by lazy men trying to find easier ways to do something."