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数学不是沿着一条清理得很好的高速公路小心行进,而是一次进入陌生荒野的旅程,探险者常常会迷路。
如果用心一旦松散,那么万事都做不好。如果用心一旦粗疏,那么凡事不能聚精会神。用心一旦固执,凡事就不能见其本来面目。
Writing is making sense of life. You work your whole life and perhaps you've made sense of one small area.
The great challenge of our time is to build institutions that can manage the complexity of modern societies.
人生中最伟大的事情就是保持心态年轻。