We require even a buddha to talk, because that's all we understand. This is foolish. You should learn to be silent with a buddha, because only then can he enter you. Through words he can knock at your door but can never enter; through silence he can enter you, and unless he enters nothing will happen to you. His entry will bring a new element to your world; his entry into the heart will give you a new beat and a new pulse, a new release of life-but only his entry.
Mahakashyap laughed at the foolishness of man. They were restless and thinking, 'When will Buddha stand up and drop this whole silence so that we can go home?' He laughed. Laughter started with Mahakashyap and has been going on and on in the Zen tradition. There is no other tradition which can laugh. Laughter looks so irreligious, profane, that you cannot think of Jesus laughing, you cannot think of Mahavira laughing. It's difficult even to conceive of Mahavira having a belly laugh, or of Jesus laughing uproariously. No, laughter has been denied. Sadness, somehow, has become religious.
One of the famous German thinkers, Count Keyserling, has written that health is irreligious. Illness has a religiousness about it because an ill person is sad, desireless-not because he has become desireless but because he is weak. A healthy person will laugh, would like to enjoy, will be merry-he cannot be sad. So religious persons have tried in many ways to make you ill: go on a fast, suppress your body, torture yourself. You will become sad, suicidal, crucified on your own. How can you laugh?
Laughter comes out of health. It's an overflowing energy. That's why children can laugh and their laughter is total. Their whole body is involved in it-when they laugh you can see their toes laughing. The whole body, every cell, every fiber of the body, is laughing and vibrating. They are so full of health, so vital; everything is flowing. A sad child means an ill child, and a laughing old man means he is still young. Even death cannot make him old, nothing can make him old. His energy is still flowing and overflowing, he is always flooded. Laughter is a flooding of energy.