Behavior is not just a response to a stimulus, but is guided by expectations and purposes.
行为不仅仅是对刺激的反应，而是由期望和目的引导的。
The journey of scientific discovery is filled with challenges, but it is also incredibly rewarding.
I don't think you need to be sad to write a sad song.
每当新的一天开始，恐惧都有机会茁壮成长，信念也一样有机会开花结果。你们将面临屈服于恐惧或建立信念的抉择。
The motor of our ingenuity is the question ‘Does it have to be like this?’, from which arise political reforms, scientific developments, improved relationships, better books.