推动的关键是使期望的行为更加突出、更容易和更有吸引力。
Mathematics is not a spectator sport.
The past is always tense, the future perfect.
Fear is not the enemy. It is the refusal to face it that destroys us.
The real question is not whether machines think but whether men do.
"The best and most beautiful things in the world cannot be seen or even touched - they must be felt with the heart."