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. - SearchQuotes

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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

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