Many poems are consecrated to this idea.
So, cleansing his soul by ennobling desire, he sought to realise his dreams in the arts, in the creation and expression of pure Beauty.

And he followed Poetry and Music and Painting, and chiefly explored passion and mind in the great poets.

Fed at these deep springs, his soul rose into keen life; his powers burst forth, and gazing on all systems and schemes of philosophy and government, he heard ineffable things unguessed by man.

All Plato entered into him; he vowed himself to liberty and the new world where "men were to be as gods and earth us heaven." Thus, yet here on earth, not only beyond the earth, he would attain the Perfect.

Man also shall attain it; and so thinking, he turned, like Sordello, to look at and learn mankind, pondering "how best life's end might be attained--an end comprising every joy." And even as he believed, the glory vanished; everything he had hoped for broke to pieces: First went my hopes of perfecting mankind, Next--faith in them, and then in freedom's self And virtue's self, then my own motives, ends And aims and loves, and human love went last.
And then, with the loss of all these things of the soul which bear a man's desires into the invisible and unreachable, he gained the world, and success in it.