Upon the solution of this problem, or upon sufficient proof of the impossibility of synthetical knowledge a priori, depends the existence or downfall….

In law a man is guilty when he violates the rights of others. In ethics he is guilty if he only thinks of doing so..

Patience is the strength of the weak, impatience is the weakness of the strong..

Three things tell a man: his eyes, his friends and his favorite quotes.

Do the right thing because it is right..

Rules for Happiness: something to do, someone to love, something to hope for..

Science is organized knowledge. Wisdom is organized life..

Most men use their knowledge only under guidance from others because they lack the courage to think independently using their own reasoning abilities….

But a lie is a lie, and in itself intrinsically evil, whether it be told with good or bad intents..

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

This spirit of freedom is expanding even where it must struggle against the external obstacles of governments that misunderstand their own function. ….

[R]eason is... given to us as a practical faculty, that is, as one that influences the will..

I have no knowledge of myself as I am, but merely as I appear to myself..

Innocence is indeed a glorious thing; but, unfortunately, it does not keep very well and is easily led astray..

A philosophical attempt to work out a universal history according to a natural plan directed to achieving the civic union of the human race must be r….

Religion is too important a matter to its devotees to be a subject of ridicule. If they indulge in absurdities, they are to be pitied rather than rid….

Without man and his potential for moral progress, the whole of reality would be a mere wilderness, a thing in vain, and have no final purpose..

Freedom can never be comprehended, nor even can insight into it be gained..

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

Things which we see are not by themselves what we see ... It remains completely unknown to us what the objects may be by themselves and apart from th….

Beneficence is a duty; and he who frequently practices it, and sees his benevolent intentions realized comes, at length, really to love him to whom h….