We never see a tree except through the image that we have of it, the concept of that tree; but the concept, the knowledge, the experience, is entirely different from the actual tree. Look at a tree and you will find how extraordinarily difficult it is to see it completely, so that no image, no screen, comes between the seeing and the actual fact. By completely I mean with the totality of your mind and heart, not a fragment of it.
There are moments when a rope's end, a pole, the branch of the tree, is life itself, and it is a frightful thing to see a living being lose his hold upon it, and fall like a ripe fruit.