国家是理性的行为者，在无政府状态的国际体系中寻求最大化其权力和安全。

The man who writes about himself and his own time is the only man who writes about all people and about all time.

Every experiment is a conversation with nature, and sometimes nature whispers its secrets.

All artists are slightly narcissistic.

The only real mistake is the one from which we learn nothing.

时间比价格更重要。时间到了，价格就会反转。