The heart becomes wide by forgetting self, but narrow by thinking of the self and pitying one's self. To gain a wide and broad heart you must have something before you to look upon, and to rest your intelligence upon - and that something is the God-ideal. This is the prescription for killing the self. Then, keeping your self before your consciousness, and by resting your consciousness on God, God, who is unlimited, will come to you. And so your knowledge, and your powers, will become unlimited also.