All men are by nature free; you have therefore an undoubted liberty to depart whenever you please, but will have many and great difficulties to encounter in passing the frontiers.
It is proved...that things cannot be other than they are, for since everything was made for a purpose, it follows that everything is made for the best purpose.
Before receiving your instruction, I must tell you what happened to me one day. I had just had a closet built at the end of my garden. I heard a mole arguing with a cockchafer; 'Here's a fine structure,' said the mole, 'it must have been a very powerful mole who did this work.' 'You're joking,' said the cockchafer; 'it's a cockchafer full of genius who is the architect of this building.' From that moment I resolved never to argue.