The hearts of all children are of the utmost purity. They are mirrors upon which no dust has fallen. But this purity is on account of weakness and innocence, not on account of any strength and testing, for as this is the early period of their childhood, their hearts and minds are unsullied by the world. They cannot display any great intelligence. They have neither hypocrisy nor deceit. This is on account of the child's weakness, whereas the man becomes pure through his strength. Through the power of intelligence he becomes simple; through the great power of reason and understanding and not through the power of weakness he becomes sincere. When he attains to the state of perfection, he will receive these qualities; his heart becomes purified, his spirit enlightened, his soul is sensitized and tender -- all through his great strength. This is the difference between the perfect man and the child. Both have the underlying qualities of simplicity and sincerity -- the child through the power of weakness and the man through the power of strength.