世界上最困难的事情，是思想想法到表现行动！

Some one is saying and some one is doing. I want to be the one who is doing.

youdao

Everything, every thought, every moment, every reflection, every evaluation, you just on fire to share.

每一个想法，每一个时刻，每一个思想和评价，你都迫不及待的想要去分享。

普林斯顿公开课 - 人性课程节选

There is something that one might be able to hold on to: the knob of something, the little flame of something that ; The grain of sand. -The grain of sand; but there is really not a decent metaphor for it, I think.

一个你可以依靠的支点：,一个不同寻常的想法，一个思想的小火花,就像一粒沙中看世界，-一粒沙中看世界;,不过我认为任何比喻都不够贴切。

普林斯顿公开课 - 人性课程节选