There is something splendid about innocence; but what is bad about it, in turn, is that it cannot protect itself very well and is easily seduced.

Every human being should always be treated as an end and never as a mere instrument.

Two things strike me dumb: the infinite starry heavens, and the sense of right and wrong in man.

An organized product of nature is that in which all the parts are mutually ends and means.

You only know me as you see me, not as I actually am

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

If I am to constrain you by any law, it must be one by which I am also bound.