Listen to me, my friend. Hope is a dangerous thing. Hope can make people crazy.
在这个世界上，有些东西用石头是刻不来的。在我们的心中有块地方是关不住的，那块地方称为自由。
Sustainability isn't an option; it's a responsibility we all share.
If you love what you do, you'll never work a day in your life.
Nature is a wonderful teacher, and if we will only be patient and observe, she will reveal her secrets to us.
在认识到热是运动的一种形式后，没有人会怀疑热可以转化为机械效应。
心理学必须建立在生活经验的事实基础上。