He would think of it later, he thought; one moves step by step and one must keep moving. For the moment, with an unnatural clarity, with a brutal simplification that made it almost easy, his consciousness contained nothing but one thought: It must not stop me. The sentence hung alone, with no past and no future. He did not think of what it was that must not stop him, or why this sentence was such a crucial absolute. It held him and he obeyed. He went step by step. He completed his schedule of appointments, as scheduled.