One of the strongest motives that lead men to art and science， is escape from everyday life with its painful crudity and hopeless dreariness， such men make this cosmos and its construction in the pivot of their emotional life， in ordered to find the peace and the security， which they cannot find in the narrow whirlpool of personal experience.
教育学中的实验方法不仅是研究的工具，更是所有教育实践的基本原则。
分发奖赏的人不要怀有私恩，行使惩罚权力的人也不要带有私怨。
Understanding the universe requires not just intelligence, but imagination.