You are now come to an age capable of reflection; and I hope you will do, what however few people at your age do, exert it, for your own sake, in the search of truth and sound knowledge. I will confess (for I am not unwilling to discover my secrets to you) that it is not many years since I have presumed to reflect for myself. Till sixteen or seventeen I had no reflection, and for many years after that I made no use of what I had. I adopted the notions of the books I read, or the company I kept, without examining whether they were just or not; and I rather chose to run the risk of easy error, than to take the time and trouble of investigating truth. Thus, partly from laziness, partly from dissipation, and partly from the _mauvaise honte_ of rejecting fashionable notions, I was (as I since found) hurried away by prejudices, instead of being guided by reason; and quietly cherished error, instead of seeking for truth. But since I have taken the trouble of reasoning for myself, and have had the courage to own that I do so, you cannot imagine how much my notions of things are altered, and in how different a light I now see them, from that in which I formerly viewed them through the deceitful medium of prejudice or authority. Nay, I may possibly still retain many errors, which, from long habit, have perhaps grown into real opinions; for it is very difficult to distinguish habits, early acquired and long entertained, from the result of our reason and reflection. My first prejudice (for I do not mention the prejudices of boys and women, such as hobgoblins, ghosts, dreams, spilling salt, &c.) was my classical enthusiasm, which I received from the books I read, and the masters who explained them to me. I was convinced there had been no common sense nor common honesty in the world for these last fifteen hundred years; but that they were totally extinguished with the ancient Greek and Roman governments. Homer and Virgil could have no faults, because they were ancient; Milton and Tasso could have no merit, because they were modern. And I could almost have said, with regard to the ancients, what Cicero, very absurdly and unbecomingly for a philosopher, says with regard to Plato, _Cum quo errare malim quam cum aliis recte sentire_. Whereas now, without any extraordinary effort of genius, I have discovered that nature was the same three thousand years ago as it is at present; that men were but men then as well as now; that modes and customs vary often, but that human nature is always the same. And I can no more suppose, that men were better, braver, or wiser, fifteen hundred or three thousand years ago, than I can suppose that the animals or vegetables were better then than they are now. I dare assert too, in defiance of the favourers of the ancients, that Homer's hero Achilles was both a brute and a scoundrel, and consequently an improper character for the hero of an epic poem; he had so little regard for his country, that he would not act in