Ah, that is a perfume in which I delight; when they roast coffee near my house, I hasten to open the door to take in all the aroma.

Chemistry... is like the maid occupied with daily civilisation; she is busy with fertilisers, medicines, glass, insecticides ... for she dispenses the recipes.

In a well governed state, there are few punishments, not because there are many pardons, but because criminals are rare; it is when a state is in decay that the multitude of crimes is a gaurantee of impunity.

Leave those vain moralists, my friend, and return to the depth of your soul: that is where you will always rediscover the source of the sacred fire which so often inflamed us with love of the sublime virtues; that is where you will see the eternal image of true beauty, the contemplation of which inspires us with a holy enthusiasm.

To live is not breathing it is action.

A born king is a very rare being.

There is no subjection so perfect as that which keeps the appearance of freedom.