Quote by Ivan Pavlov : “Science demands from a man”

Science demands from a man all his life. If you had two lives that would not be enough for you. Be passionate in your work and in your searching. – Ivan Pavlov

Quote by Ivan Pavlov : “But man has still another”

But man has still another powerful resource: natural science with its strictly objective methods. – Ivan Pavlov

Quote by Ivan Pavlov : “Perfect as the wing of”

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. – Ivan Pavlov