All thought must, directly or indirectly, by way of certain characters, relate ultimately to intuitions, and therefore, with us, to sensibility, because in no other way can an object be given to us.

All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.

Always recognize that human individuals are ends, and do not use them as means to your end.

For instance, if you have by a lie hindered a man who is even now planning a murder, you are legally responsible for all the consequences. But if you have stri…

By an object, I mean anything that we can think, i.e. anything we can talk about.

The logical picture of the facts is the thought. (3)

For knowledge of the first principles, like space, time, motion, number, is as solid as any derived through reason, and it is on such knowledge, coming from th…