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

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

Morality is not properly the doctrine of how we may make ourselves happy, but how we may make ourselves worthy of happiness.

The possession of power inevitably spoils the free use of reason.

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 he has done good.

He who has made great moral progress ceases to pray

We can judge the heart of a man by his treatment of animals.