"The universe begins to look more like a great thought than a great machine."

"To travel hopefully is better than to arrive."

"The plain fact is that there are no conclusions."

"From the intrinsic evidence of his creation, the Great Architect of the Universe now begins to appear as a pure mathematician."

"Life exists in the universe only because the carbon atom possesses certain exceptional properties."

"Put three grains of sand inside a vast cathedral, and the cathedral will be more closely packed with sand than space is with stars."