The world is full of people who have never, since childhood, met an open doorway with an open heart.

壁画是空间与观者之间的对话。

The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart.

Every breakthrough is at first laughable and ridiculous. In fact if it did not start out laughable and ridiculous， it is not a breakthrough.

事实上，我不知道如果没有数学我会做什么。