My children taught me that love has no limits.

地理学首先是关于地方的科学，而非关于人的科学。

Function precedes form in the evolution of mental processes.

如果你想过得快乐，就把生活跟目标联系在一起，而不是跟人或物质。

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

政府不应该涉足商业。