阅读下面的短文，掌握其大意，然后从短文后各题所给的A、B、C、D四个选项中，选择最佳选项。
It was a sunny winter day. I had gone down the tower when a blind man came toward me. He kept close to the wall, touching it lightly with his arm. I stood still and looked at him walking toward the tower.
"What does a blind man want to climb up the tower for?" I wondered (疑惑), Thinking of some terrible reasons, I thought I should1him.
He went up slowly and2from time to time. I followed him a few steps behind. When he got to the first corner of the bell tower, I came close to him. "Excuse me," I said as politely as I could, "but I wonder3you came up."
He smiled, "Perhaps climbing up the tower. You have noticed—and yet, not being blind, perhaps you won't—how the sun shines into the tower4the windows here and there, so that one can5the cool steps suddenly become quite warm, even in winter. But behind the wall there is shade(阴影). There is no place so good as this for feeling the difference between light and darkness. Though I'm blind, I also want to feel the6brought by the sunlight. In fact, it isn't my first time to be here." He said and seemed as7as a child.
I had never thought that even a blind man could have his way to8the beautiful life. But we often paid no attention to its value because we never9it.
We went down the10together and I left him. From then on, I began to treasure what life has given me.
