A little reflection will show us that every belief, even the simplest and most fundamental, goes beyond experience when regarded as a guide to our actions.

There is no scientific discoverer, no poet, no painter, no musician, who will not tell you that he found ready made his discovery or poem or picture - that it came to him from outside, and that he did not consciously create it from within.

We may always depend on it that algebra, which cannot be translated into good English and sound common sense, is bad algebra.

William Kingdon Clifford Quotes