城市的穷人就像树的根:看不见,但对生存至关重要。
人类大脑是一个复杂的自组织系统。
The most exciting phrase to hear in science, the one that heralds new discoveries, is not 'Eureka!' but 'That's funny...'
I have noticed that youngsters given to the climbing habit usually do something when they grow up.
Challenges are opportunities in disguise—embrace them.