Where there are facts and evidence, no one speaks of 'faith'. We do not speak of faith that 2 + 2 = 4, or that the earth is “round” and revolves around the sun, or that evolution is real, or that gravity exists. These are indisputable facts. We only speak of faith when we wish to substitute emotions, hope, feelings, opinions, convictions, fanaticism, dogma, and beliefs for facts, proofs, evidence, and reality.
… Bertrand Russell.