Quotes About Knowledge

what things may be in themselves, I know not, and need not know because a thing is never presented to me otherwise than as a phenomena.

If the intuition must conform to the nature of the objects, I do not see how we can know anything of them a priori. If, on the other hand, the object conforms to the nature of our faculty of intuition, I can then easily conceive the possibility of such an a priori knowledge.

I have no knowledge of myself as I am but only as I appear to myself. The consciousness of oneself is therefore very far from being a knowledge of oneself.

Immanuel Kant

The march of mathematics is pursued on a broad and magnificent highway, which the latest posterity shall frequent without fear of danger or impediment.

It is beyond doubt that all knowledge begins with experience.

Our reason has this peculiar fate that, with reference to one class of its knowledge, it is always troubled with questions which cannot be ignored, because they spring from the very nature of reason, and which cannot be answered, because they transcend the powers of human reason.

How things may be in themselves, without regard to the representations through which they affect us, is utterly beyond the sphere of our cognition.

Denken zonder ervaring is leeg, maar ervaring zonder denken is blind.

I have therefore found it necessary to deny knowledge, in order to make room for faith. ? Immanuel Kant, Critique of Pure Reason

To think an object, then, is not the same as to know an object.

The point is not always to speculate, but also ultimately to think about applying our knowledge. Today, however, he who lives in conformity with what he teaches is taken for a dreamer.

probability is a truth, known however through insufficient grounds, the knowledge of which is therefore deficient, but not deceptive [...]

The public use of one's reason must always be free, and it alone can bring about enlightenment among men.

Wir erkennen von den Dingen a priori nur das, was wir selbst in sie hineingelegt haben.

If God should really speak to man, man could still never know that it was God speaking.

That there may be inhabitants in the moon, although no one has ever observed them, must certainly be admitted; but this assertion means only, that we may in the possible progress of experience discover them at some future time.

A person born blind cannot frame the smallest conception of darkness, because he has none of light. The savage knows nothing of poverty, because he does not know wealth and the ignorant has no conception of his ignorance, because he has none of knowledge.

Nonage [immaturity] is the inability to use one's own understanding without another's guidance. This nonage is self-imposed if its cause lies not in lack of understanding but in indecision and lack of courage to use one's own mind without another's guidance. Dare to know!

The real is not given to us, but put to us by way of a riddle.

O ser humano é aquilo que a educação faz dele.

In what way will our remote posterity be able to cope with the enormous accumulation of historical records which a few centuries will bequeath to them?

Nobody can claim himself to be practically proficient in a science and yet disdain its theory without revealing himself to be an ignoramus in his area.

Pensamentos sem conteúdos são vazios, intuições sem conceitos são cegas.