心理学必须基于可观察的事实，而非推测。

和平不是免费的，需要不断努力维护。

It is better to be a human being dissatisfied than a pig satisfied； better to be Socrates dissatisfied than a fool satisfied.

I don’t think about being the best, I think about being better than yesterday.

写作是一种发现的行为。

I think that we communicate only too well, in our silence, in what is unsaid, and that what takes place is a continual evasion, desperate rearguard attempts to keep ourselves to ourselves.