开放的社会、对知识的无限制获取、人们为推进知识而进行的无计划和无拘束的联合——这些可能使一个庞大、复杂、不断增长、日益专业化和技术化的世界,仍然是一个人类共同体的世界。
The only thing you can do with good advice is pass it on. It is never of any use to oneself.
攻击我很厉害我也回敬得很厉害,攻击我很轻微我也回敬得很轻微。 
Success is the ability to go from one failure to another with no loss of enthusiasm.
In language, we find the essence of human creativity.