Gradualness, gradualness, and gradualness. From the very beginning of your work, school yourself to severe gradualness in the accumulation of knowledge.
Ivan PavlovPerfect 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 PavlovBut man has still another powerful resource: natural science with its strictly objective methods.
Ivan PavlovMen are apt to be much more influenced by words than by the actual facts of the surrounding reality
Ivan Pavlov