No matter how complex or refined, all behavior is to be explained in terms of stimulus and response.
无论多么复杂或精细，所有行为都可以用刺激和反应来解释。
The power of abstraction is that it allows us to reason about systems at a higher level, without getting bogged down in the details.
能源转型不仅是挑战，更是发展的机遇。
——晚年访谈