It's on the strength of observation and reflection that one finds a way. So we must dig and delve unceasingly.

做人，就是要承担责任。

发现的喜悦无疑是人类心灵所能感受到的最活跃的体验。

You don't learn to walk by following rules. You learn by doing, and by falling over.

设定新目标或梦想新梦想永远不会太晚。

抽象的力量使数学能够超越物理现实的限制。