Roberto de Oliveira Campos Quotes

Logic has made me hated in the world.

Logic is like the sword - those who appeal to it, shall perish by it.

Logic is in the eye of the logician.

I am bound to furnish my antagonists with arguments, but not with comprehension.

[Logic and philosophy] were of no use, in the church or the state, in the cloister or the court, in peace or war, at home or abroad or anywhere but in the schools

If someone doesn’t value evidence, what evidence are you going to provide that proves they should value evidence. If someone doesn’t value logic, what logical argument would you invoke to prove they should value logic?

I live in Realville, and my problem is that I'm governed by logic. And some of the claims that are made by people on the left just don't hold up.

Logic teaches rules for presentation, not thinking.

Contrariwise, if it was so, it might be; and if it were so, it would be; but as it isn't, it ain't. That's logic.

Logic will never change emotion or perception.

Logic is neither an art nor a science but a dodge.

The knowledge of the theory of logic has no tendency whatever to make men good reasoners.

Logic, sometimes has very little to do with political action.

Bad reasoning as well as good reasoning is possible; and this fact is the foundation of the practical side of logic.

Logic is neither a science nor an art, but a dodge.

Logic is the technique by which we add conviction to truth.

Those who invalidate reason ought seriously to consider whether they argue against reason with or without reason.

Logic is the last scientific ingredient of Philosophy; its extraction leaves behind only a confusion of non-scientific, pseudo problems.

It is wrong always, everywhere, and for everyone, to believe anything upon insufficient evidence.

Logic must look after itself. In a certain sense, we cannot make mistakes in logic.

You should carefully study the Art of Reasoning, as it is what most people are very deficient in, and I know few things more disagreeable than to argue, or even converse with a man who has no idea of inductive and deductive philosophy.

Whoever in discussion adduces authority uses not intellect but rather memory.

Philosophy is easier than politics.

Logic, it is true, must yield to history.

By free-thinking I mean the use of the understanding in endeavoring to find out the meaning of any proposition whatsoever, in considering the nature of the evidence for or against it, and in judging of it according to the seeming force or weakness of the evidence.