The story of Aladdin illustrates this truth. Aladdin could only win the princess if he first obtained the lamp which she desired. He goes out into the world but cannot find the lamp there, so he goes into the forest where he meets someone who is able to show him the way to reach it. But this man cannot himself give it to him, which means that emotion by itself does not suffice to bring it. Aladdin is told to go to a certain mountain and repeat certain words which will cause the side of the mountain to open. He does this, and the mountain opens, but when he is within the cave he begins to suffocate because there is no air. Nevertheless, persevering, he penetrates farther into the mountain and in time he comes upon the lantern.