Logical Proof Quotes

It is with logic that one proves; it is with intuition that one invents.

A statement is persuasive and credible either because it is directly self-evident or because it appears to be proved from other statements that are so.

The purpose of this study is to offer a logical, practical, pragmatic proof of the existence of God from a purely scientific perspective.

A romantic is someone who believes that something is valuable even if it doesn't last. And a non-romantic is someone who says that if something doesn't endure, or can't be logically proved and pinned down, it's worthless.

Mathematical proofs, like diamonds, are hard and clear, and will be touched with nothing but strict reasoning.

What you believe matters, however. It’s all anyone has to act on. And since what you do is who you are, your actions define you. If you don’t believe anything is true simply because you can’t logically prove what’s true, you won’t do anything. You won’t be anything. You’ll end up spending your life in a rocking chair looking out at the horizon waiting for an answer that never comes. You might as well be dead. It’s an old philosophical problem.

Take note, theologians, that in your desire to make matters of faith out of propositions relating to the fixity of sun and earth you run the risk of eventually having to condemn as heretics those who would declare the earth to stand still and the sun to change position-eventually, I say, at such a time as it might be physically or logically proved that the earth moves and the sun stands still.

You can "prove" anything on the verbal level, just be accepting the necessary axioms at the beginning.

We may assume the superiority ceteris paribus of the demonstration which derives from fewer postulates or hypotheses - in short, from fewer premises.

Of the modes of persuasion furnished by the spoken word there are three kinds. The first kind depends on the personal character ofthe speaker; the second on putting the audience into a certain frame of mind; the third on the proof, provided by the words of the speech itself.

Since we think we understand when we know the explanation, and there are four types of explanation (one, what it is to be a thing; one, that if certain things hold it is necessary that this does; another, what initiated the change; and fourth, the aim), all these are proved through the middle term.

As the scale of the balance must give way to the weight that presses it down, so the mind must of necessity yield to demonstration.

One cannot really argue with a mathematical theorem.