The flood-tide of this faith flowed far into the nineteenth century. The Italian Mazzini, leader of revolt in 1848, was filled with it. Prophet of the most generous political gospel ever preached, he lived on the hope that, if freedom were given to the nations and duty set before them, they would prove worthy of their double mission, and peace would come to pass between all peoples. But even Mazzini had his moments of agonizing doubt. And others beside him, men of lesser intellect as well as greater, were soon to raise, or had already raised, voices, stern or fretful, of protest and criticism. It became clear at last that this joyous confidence rested on a very definite view of life and one that might easily be challenged, the view, namely, that at bottom the universe meant well to man, that his greatest aspirations were compatible with each other and nowise beyond attainment. Almost from the first there were men of the modern world who did challenge this. Byron and Schopenhauer are significant figures, both born in the same year, only eighteen years later than the great Three of 1770, Wordsworth, Hegel, and Beethoven. Byron is full of moody questionings, Schopenhauer of much more than questionings. Against the dauntless optimism of Hegel, he flatly denies that the universe is good, or happiness possible for man. On the contrary, at the heart of it and of him there lies an infinite unrest, never to be quieted until man himself gives up the Will to Live and sinks back into the Unconscious from which he came.