The right path in life is very narrow, but it is important to find it. You can understand it, as well as we can understand it, as a walkway of wood built across a swamp; if you step off it, you will plunge into the swamp of misunderstanding and evil. A wise man returns to the true path at once, but a weak man plunges further and further into the swamp, and it becomes more and more difficult for him to get out.