ADAM. What is the good of being careful? We have to live here for ever. Think of what for ever means! Sooner or later I shall trip and fall. It may be tomorrow; it may be after as many days as there are leaves in the garden and grains of sand by the river. No matter: some day I shall forget and stumble.
EVE. I too.
ADAM [horrified] Oh no, no. I should be alone. Alone for ever. You must never put yourself in danger of stumbling. You must not move about. You must sit still. I will take care of you and bring you what you want.
EVE [turning away from him with a shrug, and hugging her ankles] I should soon get tired of that. Besides, if it happened to you, I should be alone. I could not sit still then. And at last it would happen to me too.
ADAM. And then?
EVE. Then we should be no more. There would be only the things on all fours, and the birds, and the snakes.
ADAM. That must not be.
EVE. Yes: that must not be. But it might be.
ADAM. No. I tell you it must not be. I know that it must not be.
EVE. We both know it. How do we know it?