A supposition; a proposition or principle which is supposed or taken for granted, in order to draw a conclusion or inference for proof of the point in question; something not proved, but assumed for the purpose of argument, or to account for a fact or an occurrence; as, the hypothesis that head winds detain an overdue steamer.
A tentative theory or supposition provisionally adopted to explain certain facts, and to guide in the investigation of others; hence, frequently called a working hypothesis.
The word 'belief' is a difficult thing for me. I don't believe. I must have a reason for a certain hypothesis. Either I know a thing, and then I know it - I don't need to believe it. Carl Jung
The great tragedy of science - the slaying of a beautiful hypothesis by an ugly fact. Thomas Huxley
The only relevant test of the validity of a hypothesis is comparison of prediction with experience. Milton Friedman
It is a good morning exercise for a research scientist to discard a pet hypothesis every day before breakfast. It keeps him young. Konrad Lorenz
God is not a hypothesis derived from logical assumptions, but an immediate insight, self-evident as light. He is not something to be sought in the darkness with the light of reason. He is the light. Abraham Joshua Heschel