G. H. Lewes says:--"Epicureanism, in leading man to a correct appreciation of the moral end of his existence, in showing him how to be truly happy, has to combat with many obstructions which hide from him the real road of life. These obstructions are his illusions, his prejudices, his errors, his ignorance. This ignorance is of two kinds, as Victor Cousin points out; ignorance of the laws of the external world, which creates absurd superstitions, and troubles the mind with false fears and false hopes. Hence the necessity of some knowledge of physics." (We can scarcely blame Epicurus that he was not in advance of his time, as far as the physical sciences are concerned, and therefore imparted an imperfect system of physics. We must, with our improved knowledge, ourselves remove the obstruction.) "The second kind of ignorance is that of the nature of man. Socrates had taught men to regard their own nature as the great object of investigation; and this lesson Epicurus willingly gave ear to.--But man does not interrogate his own nature out of simple curiosity, or simple erudition; he studies his nature in order that he may improve it; he learns the extent of his capacities, in order that he may properly direct them. The aim, therefore, of all such inquiries must be happiness." We may add that the result of all such inquiries will be happiness, if the inquirer will but base his investigation and experiments upon facts. Let him understand that, as he improves the circumstances which surround him, so will he advance himself, becoming happier, and making his fellows happy also. Remember the words of Epicurus, and seek that pleasure for yourself which appears the most durable, and attended with the greatest pleasure to your fellow men. "I" ZENO, THE STOIC In the previous number we gave a short sketch of the opinions of Epicurus. In this we shall deal with the founder of a rival sect--the Stoics. Amongst the disciples and students in the Stoic schools have been many illustrious names, and not the least worthy is the name with which we are now dealing.