States and warring interests have reached unity as a nation; and how was it done? It was done by the holding up of the ideal in both cases, the ideal of national unity. Not until German poets had sung of the German Fatherland for many and many a long year, not until that ideal of the Fatherland rose strongly and clearly in the minds of the young, not until the poet had made the ideal was it possible for the soldier to come forward with the statesman and build those States into one. And so also with Italy. Long before there was any talk of revolution or war, long before there was any idea of appealing to the sword, Italian thinkers had spoken of Italian unity, Italian patriots had held up the ideal of a united Italy; and it was only when the ideal had fired the hearts of the young that there was strength enough for the self-sacrifice that followed the sword of Garibaldi, and made it possible for Italy to become a united people. For it is out of the ideal that enthusiasm grows, out of the ideal and the longing to realise it that the power of self-sacrifice is generated. What we need to do, then, to change human nature, is to hold up great ideals before the young of our time, and those ideals shall fire their hearts to passionate enthusiasm, until self-sacrifice shall be a joy and not a sacrifice at all, in order that the ideal they worship may become realised upon earth. Along those lines human nature will change; for, never forget that Human Nature is divine, not devilish; that a God is at the heart of every man, unfolding the power of divinity; hence the power of the ideal to fire and the power of thought to mould the lines of character.