There are two liberties of communication, and these seem to me to be the utmost possible ones: the one that occurs face-to-face with the accomplished thing, and the one that takes place within actual daily life, in showing one another what one has become through one’s work and thereby supporting and helping and (in the humble sense of the word) admiring one another. But in either case one must show results, and it is not lack of trust or withdrawal or rejection if one doesn’t present to another the tools of one’s progress, which have so much about them that is confusing and tortuous, and whose only value lies in the personal use one makes of them. I often think to myself what madness it would have been for van Gogh, and how destructive, if he had been forced to share the singularity of his vision with someone, to have someone join him in looking at his motifs before he had made his pictures out of them, these existences that justify him with all their being, that vouch for him, invoke his reality. He did seem to feel sometimes that he needed to do this in letters (although there, too, he’s usually talking of finished work), but no sooner did Gauguin, the comrade he’d longed for, the kindred spirit, arrive than he had to cut off his ear in despair, after they had both determined to hate one another and at the first opportunity get rid of each other for good.
Rilke, R.M. & Rilke, C., 2002. Letters on Cézanne, New York, NY: North Point Press.