The eyes of man symbolize God, the nose symbolizes man and the mouth symbolizes the creation. Since the mouth eats, it symbolizes the creation. The mouth is well made to eat a lot of food. Through this mouth the interconnection between mind and body is made. What does the mouth like most? The mouth takes in food for metabolization. It makes connections among all the creatures. Also, all words proceed from the mouth. (39-167, 38-253, 107-293)

The teeth were created knowing that there is food for them to chew, weren't they? And the tongue was created knowing that it is to speak. If the tongue is to speak it should harmonize with the lips. But if the lips were like wooden boards the tongue would not be able to speak. Watch me speaking. The tongue and the lips, they keep time well. It is really astonishing to see. In this respect they all knew these earthly duties. (39-332)

The tongue in the mouth, how wonderful it is! The tongue practices the reciprocal motions of contraction and elongation for more than 70 or 80 years without causing any problem. It is really a wonder, a miracle. So it is well made for speaking. Eating and speaking, the tongue plays its part. I can hardly comprehend it. They are all like miracles to me. Inside the mouth takes place all kinds of action: pulling, pushing, rolling, passing through cutting, gear-like teeth, all in perfect harmony with each other's beat without causing any accident. These are all miracles to me. How vast is the sum of them! Harmony box, that is what it is. I speak very fast like this. But it keeps time with the lips so well that we who met for the first time yet felt cozy and warm. What makes it? The tongue. Isn't it?

If the tongue acted like fingers, it would cause big trouble. But the tongue performs miraculously so many things in a short time that words are not enough to praise its work. Look, in perfect time and at speed it eats, speaks, and treats many other things in a very clever way. It is really a secret and a miracle. Without the tongue, how can we eat and speak? It performs what is called "the heaven and earth harmony." You should thank the tongue. Without the tongue, how can one eat and speak? The truth hidden behind this fact is that there is someone who knew all of these things beforehand. (38-155, 38-250)

Between the two lips, which of them is thicker? Yes, the lower one is thicker than the upper. Now, which of them is longer? Why is the upper longer? It just looks longer outwardly to match this line! They are well harmonized. You think the upper lip is longer as you look at the lips. In reality the upper lip is shorter. Why is that so? To match the weight to the thicker one the upper one must be longish. Hence, they are a good match for weight. Or if this side gets raised, it looks even longer. It is all because one is considerate of the other. (94-65, 118-112)