"The past is a foreign country; they do things differently there."
Stay focused and never lose sight of your goals.
I stand up for what I believe in, and I don't back down.
心灵的首要职责是让有机体继续运转。
心理学的研究就是研究生活的策略。
数学中最激动人心的时刻是当你意识到两个看似不相关的领域有着深刻的联系时。