This freedom is a splendid privilege, and the first lesson of the young novelist is to learn to be worthy of it. "Enjoy it as it deserves," I should say to him; "take possession of it, explore it to its utmost extent, reveal it, rejoice in it. All life belongs to you, and don't listen either to those who would shut you up into corners of it and tell you that it is only here and there that art inhabits, or to those who would persuade you that this heavenly messenger wings her way outside of life altogether, breathing a superfine air and turning away her head from the truth of things.
Don't think too much about optimism and pessimism; try and catch the colour of life itself.