Do not come back to philosophy as a schoolboy to tutor, but rather as a man with ophthalmia returns to his sponge and salve, or another to his poultice or lotion. In this way you will prove that obedience to reason is no great burden, but a source of relief. Remember, too, that philosophy wants only what your nature wants... look and see whether there is not something more agreeable in magnanimity, generosity, simplicity, consideration, piety. And what is more agreeable than wisdom itself, when you reflect on the sure and constant flow of our faculty for application and understanding?"