Propositions show what they say: tautologies and contradictions show that they say nothing.
Sentiment: NEGATIVE
When somebody says that all statements are false, the obvious problem is that as an assertion it's self-defeating.
In formal logic, a contradiction is the signal of defeat, but in the evolution of real knowledge it marks the first step in progress toward a victory.
In contradiction and paradox, you can find truth.
That the sun will not rise tomorrow is no less intelligible a proposition, and implies no more contradiction, than the affirmation, that it will rise.
The plain fact is that there are no conclusions.
A witty saying proves nothing.
A bare assertion is not necessarily the naked truth.
Contradictions do not exist. Whenever you think you are facing a contradiction, check your premises. You will find that one of them is wrong.
There are more ways of outraging speech than contradiction merely.
If a person never contradicts himself, it must be that he says nothing.