Everything degenerates in the hands of man.

The person who has lived the most is not the one with the most years but the one with the richest experiences.

To discover the rules of society that are best suited to nations, there would need to exist a superior intelligence, who could understand the passions of men without feeling any of them, who had no affinity with our nature but knew it to the full, whose happiness was independent of ours, but who would nevertheless make our happiness his concern, who would be content to wait in the fullness of time for a distant glory, and to labour in one age to enjoy the fruits in another. Gods would be needed to give men laws.

Let the trumpet of the day of judgment sound when it will, I shall appear with this book in my hand before the Sovereign Judge, and cry with a loud voice, This is my work, there were my thoughts, and thus was I. I have freely told both the good and the bad, have hid nothing wicked, added nothing good.

That which renders life burdensome to us generally arises from the abuse of it.

I had been brought up in a church which decides everything and permits no doubts, so that having rejected one article of faith I was forced to reject the rest.

Do to others as you would have others do to you, inspires all men with that other maxim of natural goodness a great deal less perfect, but perhaps more useful: Do good to yourself with as little prejudice as you can to others.