He's not quite blue yet, but that will come, you shall see! … Take him off quick to your little girl... - Maurice Maeterlinck

Oh, and I almost forgot to say, Neighbour Berlingot's little girl actually did get well, when her brother brought her the beautiful bird in his cage.
Did I hear someone ask whether the bird had changed colours, and really was blue? Well, if Tyltyl and Mytyl's joy and happiness gave him a magnificent blue plumage, isn't that enough? Without knowing it, these gentle children had discovered Light's great secret, which is that we draw nearer to happiness by trying to give it to others!

However imperfect our conception of virtue, still let us cling to it; for a moment’s forgetfulness exposes us to all the malignant forces from without. The simplest lie to myself, buried though it may be in the silence of my soul, may yet be as dangerous to my inner liberty as an act of treachery on the marketplace.

Widfom and Destiny

Our real life is not the life we live, and we feel that our deepest, nay, our most intimate thoughts are quite apart from ourselves, for we are other than our thoughts and our dreams. And it is only at special moments – it may be by merest accident – that we live our own life. Will the day ever dawn when we shall be what we are? …