Conditions Quote by Aleister Crowley

Finally, if nothing can be truly asserted, even the following claim would be false, the claim that there is no true assertion.

— Aristotle

“Propositions become either pure or impure, not true or false.”

— Mark Lilla

“Besides the propositions which assert Sequence or Co-existence, there are some which assert simple Existence; 36 and others assert Causation, which, subject to the…

— John Stuart Mill

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

— Christopher Hitchens

The fundamental principle in the analysis of propositions containing descriptions is this: Every proposition which we can understand must be composed wholly of constituents…

— Bertrand Russell

All proofs inevitably lead to propositions which have no proof! All things are known because we want to believe in them.

— Frank Herbert

A universe whose only claim to be believed in rests on the validity of inference must not start telling us the inference is invalid.

— C. S. Lewis

The meaning of a proposition is the method of its verification.

— Moritz Schlick

Give unqualified assent to no propositions but those the truth of which is so clear and distinct that they cannot be doubted. The enunciation…

— Thomas Huxley

No matter how improbable an assertion is, if it is made with enough assurance it has an affect.

— Erich Maria Remarque

We live in a century in which everything has been said. The challenge today is to learn which statements to deny.

— Charles Hartshorne

There are many degrees of Probable, some nearer Truth than others, in the determining of which lies the chief exercise of our Judgment.

— Christiaan Huygens