It is the possession of this deductive faculty, so characteristic of men of genius--their ability to reach conclusions directly, as great mathematicians perceive inferences which those less gifted reach only after pages of elaborate calculations--which enable women, "not indeed to make scientific discoveries, but to exercise the most momentous and salutary influence over the method by which scientific discoveries are made." For, as Buckle points out, men of science are too inclined to employ the inductive method to the exclusion of the deductive.[252] They have become slaves to the tyranny of facts, and, as such, are incompetent to further the progress of science as they would by using both methods instead of one. And their slavery would be still more complete and ignominious were it not for the great though unconscious service to science rendered by women who have kept alive the deductive habit of thought. "Their turn of thought, their habits of mind, their conversation, their influence, insensibly extending over the whole surface of society and frequently penetrating its intimate structure, have, more than all other things put together, tended to raise us up into an ideal world, lift us from the dust in which we are too prone to grovel, and develop in us those germs of imagination which even the most sluggish and apathetic understandings in some degree possess." From the foregoing observations it is manifest that the best results to science are secured when men and women work together--men supplying the slow, logical reasoning power, women the vivid, far-reaching imagination; men generalizing from facts, women from ideas; men working chiefly by induction, women principally by deduction. For thus collaborating, each with his or her predominant faculties, the two combined possess in a measure the elements which go to make up a man or woman of genius and which enable them to achieve far more for the advancement of science than would otherwise be possible.