"A scientist who cannot prove what he has accomplished, has accomplished nothing."

"This I know; the spirit of Man cannot be stopped."

"Tired minds don't plan well. Sleep first, plan later."

"I don't sleep. I hate those little slices of death."

"The ultimate aim of all science to penetrate the unknown. Do you realize we know less about the earth we live on than about the stars and the galaxies of outer space? The greatest mystery is right here, right under our feet."

"There's no term to the work of a scientist."

"Don't you see what's at stake here? The ultimate aim of all science to penetrate the unknown. Do you realize we know less about the earth we live on than about the stars and the galaxies of outer space? The greatest mystery is right here, right under our feet."