The essence of mathematics lies in its freedom.
数学的本质在于它的自由。
译文：性只有一个：从它的形体方面来说叫做天，从它的主宰方面来说叫做帝，从它的流行方面来说叫做命，赋予人叫做性，在人身上起主导作用叫做心。
建筑关乎时间，关乎事物如何随时间变化。
Escribir es un acto de valentía, de enfrentarse a uno mismo y al mundo.
The wild is a place of constant change. To survive, you have to be ready to adapt.
——〈在北京湖广会馆学界欢迎会的演说〉，1912年8月30日
Sustainability is not a cost - it's the biggest innovation opportunity of our lifetime.
"Children's literature is the foundation of the imagination, the birthplace of creativity, and the first step towards a lifelong love of reading."
The mind is a system of coordinated sensations.