The most important thing is to keep thinking, keep questioning.

摄影是真实的。电影是每秒24次的真实。

The most difficult thing is the decision to act, the rest is merely tenacity.

Every sensation we feel is the result of intricate molecular mechanisms.

The materials choose the artist as much as the artist chooses them.

States are rational actors that seek to maximize their power and security in an anarchic international system.

"Human nature is not infinitely malleable; it comes with an inherent structure that channels development in certain directions."