Act that your principle of action might safely be made a law for the whole world.

If, like Hume, I had all manner of adornment in my power, I would still have reservations about using them. It is true that some readers will be scared off by dryness. But isn't it necessary to scare off some if in their case the matter would end up in bad hands?

The sceptics, a kind of nomads, despising all settled culture of the land, broke up from time to time all civil society. Fortunately their number was small, and they could not prevent the old settlers from returning to cultivate the ground afresh, though without any fixed plan or agreement.

Reason should investigate its own parameters before declaring its omniscience.

Two things awe me most, the starry sky above me and the moral law within me.

Freedom is independence of the compulsory will of another, and in so far as it tends to exist with the freedom of all according to a universal law, it is the one sole original inborn right belonging to every man in virtue of his humanity.

It is often necessary to make a decision on the basis of knowledge sufficient for action but insufficient to satisfy the intellect.