Quotes About Logic

A popular Internet essay notes: "There is no egg in egg plant, neither apple nor pine in pineapple. A guinea pig is neither from Guinea nor is it a pig. If the plural of tooth is teeth, why isn't the plural of booth beeth? One goose, two geese. So one moose, two meese? If teachers taught, why haven't preachers praught? We have noses that run and feet that smell. How can a slim chance and a fat chance be the same, while a wise man and a wise guy are opposites?

Power beyond reason created a lasting irrationality.

Logic is the youth of mathematics, mathematics is the manhood of logic." This brilliant mot of the eminent philosopher of mathematics is no

It is not paradox to say that in our most theoretical moods we may be nearest to our most practical applications

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 formal logic, a contradiction is the signal of a defeat; but in the evolution of real knowledge it marks the first step in progress towards a victory.

Nature is probably quite indifferent to the aesthetic preferences of mathematicians.

Rationalism is an adventure in the clarification of thought.

Russell is a Platonic dialogue in himself.

The certainty of mathematics depends on its complete abstract generality.

the business of Logic is not the analysis of generalities but their mingling.

Reason not the need, the man says. Need not the reason.

The head has its confines. The head's got those all right, and the heart. The heart has its reasons.

Having dedicated whole regions to the destruction you inspire, the logic will be to go on doing it doing it. Having proceeded by the logic of your per- sonal vaccuum you will perceive your continued lightlessness as an excuse to go on. having gone on as you have. And so one continues.

Assim, quando coloca a Terra no centro do mapa, ou, mais especificamente, num ponto particular da Terra, o astrólogo está seguindo a lógica de que onde quer que existamos como indivíduos, o nosso xentro e o nosso foco estão no grande esquema das coisas.

That seems highly unlikely, Lady Helen. Two weak elements do not make a strong whole. We would prefer that you have a male Terrene. I am sure you are most intelligent, but you are still a woman and therefore reliant upon emotion rather than logic, and subject to your sensibilities as are all your sex. You cannot be expected to have the same strength, strategic mind or logic competence as a man. A male Terrene would counter that deficit.

Reason transformed into prejudice is the worst form of prejudice, because reason is the only instrument for liberation from prejudice.

Only exceptionally rational men can afford to be absurd.

Uma teoria não pode ser aceita como verdadeira senão com a cláusula de satisfazer a razão e dar conta de todos os fatos que abrange; se um só fato lhe trouxer um desmentido, é que não contém a verdade absoluta.

porque no hay fe inalterable sino la que puede mirar frente a frente a la razón en todas las edades de la humanidad".

Serious poetry deals with the fundamental conflicts that cannot be logically resolved: we can state the conflicts rationally, but reason does not relieve us of them.

Dramatic experience is not logical it may be subdued to the kind of coherence that we indicate when we speak, in criticism, of form.

Mathematics is natural. Love is natural. It only makes sense that it's mathematically quantifiable.

But guilt isn't smart. It isn't logical. It doesn't only live in the places it belongs.