“Perfect as the wing of a bird may be, it will never enable the bird to fly if unsupported by the air. Facts are the air of science. Without them a man of science can never rise.”
More from Ivan Pavlov
“Don’t become a mere recorder of facts, but try to penetrate the mystery of their origin.”
“While you are experimenting, do not remain content with the surface of things.”
“Science demands from a man all his life. If you had two lives that would not be enough for…”