If you lean against the wall, you may vomit blood.

靠着墙坐会吐血

When the person next to you eats, it does not make you full. Likewise, no one but yourself can enable you to become enlightened. Good teachers can only teach you how to cultivate and how to meditate. Although they may show you the path, you yourself must walk upon it. If you choose not to, it will not be of any use. When you meditate, do not lean against the wall. You may think that the wall is hard and sturdy: “The wall will not fall if I lean against it, nor will I make a hole in it. Even if I fall asleep, I will not fall to the ground.” Well, let me warn you first—by doing this, you may get sick and vomit blood. Do not be so dependent and lean against the wall or anything else, thinking that this is more comfortable. This is a mistake!

旁人吃饭你不会饱，旁人是没法子帮助你开悟，善知识只能告诉你怎么样用功修行，怎么样打坐；虽然指示你这条路，可是这条路要你自己去修行，要你自己去走，你自己不走，那还是没有用的。你打坐的时候，不要依靠着墙上，以为墙是很硬的「我靠也靠不倒它，靠不出窟窿来；我就是睡着了，也掉不到地下。」你靠墙靠得多了，我先警告你这会吐血的、会生毛病的，所以不要生这种依赖心，不要往墙上靠，或者在背后边垫上一个垫子，以为靠着舒服一点，这也是错误的！