Quote by John Stuart Mill

“When we predicate of any thing an abstract name, we affirm of the thing that it is one or other of these five things;…

— John Stuart Mill

We can no longer assert any single proposition, unless we guard ourselves by enumerating countless conditions which must be assumed.

— Aleister Crowley

“it is unmistakable; it does not need other proofs to back it up; it is self-evident and attests to its own truth.”

— John W. Loftus

“That which can be asserted without evidence, can be dismissed without evidence.”

— Christopher Hitchens

This, it may be said, is no more than a hypothesis, but it satisfies the conditions of a legitimate hypothesis, by postulating the operation…

— William Robertson Smith

“When a fact appears to be opposed to a long train of deductions, it invariably proves to be capable of bearing some other interpretation.…

— Arthur Conan Doyle

“What can be asserted without proof can be dismissed without proof.”

— Christopher Hitchens

“All events are but the consummation of preceding causes, clearly seen but not distinctly apprehended.”

— Marion Zimmer Bradley

“The fact that we can neither prove nor disprove the existence of something does not put existence and non-existence on an even footing.”

— Richard Dawkins

“A very single fact could emerge into many versions of truth, depends on the number of eyewitnesses and interpretations.”

— Toba Beta

The hypotheses which we accept ought to explain phenomena which we have observed. But they ought to do more than this; our hypotheses ought…

— William Whewell

“The more self-evident a thing is to one's reason, the more certain it is that it exists”

— Jostein Gaarder