It is not because certain things are difficult that we do not dare;it is because we do not dare that things are difficult.
每位科学家都有责任考虑他们工作的更广泛影响。
被别人用他们认为是坏名字的称呼并不是侮辱。这只是表明那个人有多可怜，它不会伤害你。
Forests are the lungs of the earth, and we must protect them with the same urgency as our own health.
When you read,don't just consider what the author thinks,consider what you think.
You can't just sit there and wait for people to give you that golden dream. You've got to get out there and make it happen for yourself.