What good would it be to possess the whole universe if one were its only survivor?

Do I dare set forth here the most important, the most useful rule of all education? It is not to save time, but to squander it.

The animals you eat are not those who devour others; you do not eat the carnivorous beasts, you take them as your pattern. You only hunger for the sweet and gentle creatures which harm no one, which follow you, serve you, and are devoured by you as the reward of their service.

Every artists wants to be applauded

That man is truly free who desires what he is able to perform, and does what he desires.

There exists one book, which, to my taste, furnishes the happiest treatise of natural education. What then is this marvelous book? Is it Aristotle? Is it Pliny, is it Buffon? No-it is Robinson Crusoe.

War is then not a relationship between one man and another, but a relationship between one State and another, in which individuals are enemies only by accident, not as men, nor even as citizens, but as soldiers; not as members of the fatherland, but as its defenders. Finally, any State can only have other States, and not men, as enemies, inasmuch as it is impossible to fix a true relation between things of different natures.