This idea is expressed by the words Kalpa Vraksha, the tree of desire. The story is that whoever happens to sit down for a moment under this tree will have his wish fulfilled; yet nobody knows where this tree is to be found. The tree is the mind; its root is the heart. That which gives power to thought, gives spirit or life to thought, is feeling. A man without feeling is as though dead; with feeling he is living, and so is his thought. Thought with feeling is a much greater power than thought without feeling. Merely to say, "I like your picture so much" will have no effect when there is no feeling behind it. It is just a string of words. There is no life in it. But when these words are uttered with feeling they go through your heart also; the thought becomes living.