Every life is in many days, day after day. We walk through ourselves, meeting robbers, ghosts, giants, old men, young men, wives, widows, brothers-in-love, but always meeting ourselves.
自适应控制的核心是从经验中学习并相应地调整控制器。
The foundation of morality is sympathy for others.
这个世界惟有两样东西让我们的心灵感到深深的震撼，一是我们头顶上灿烂的星空，一是我们内心崇高的道德法则。
The Celts have a close affinity with nature, and we have a great respect for the elements.