Eddington, Sir Arthur Stanley Reasoning leads us from premises to conclusion; it cannot start without premises. . . [W]e. . .must believe that we have an inner sense of values which guides us as to what is to be heeded, otherwise we cannot start on our survey even of the physical world. . .At the very beginning there is something which might be described as an act of faith-a belief that what our eyes have to show us is signiﬁcant.