Nothing exists except atoms and empty space; everything else... - Democritus

"Raising children is an uncertain thing; success is reached only after a life of battle and worry."

"Everything existing in the universe is the fruit of chance and necessity."

"Nothing exists except atoms and empty space; everything else is opinion."

"No power and no treasure can outweigh the extension of our knowledge."

"Everything existing in the universe is the fruit of chance and necessity."