种一棵树最好的时间是20年前，第二好的时间是现在。
The best time to plant a tree was 20 years ago; the second best time is now.
在气候多变的时代，适应是生存的关键。
The first of April is the day we remember what we are the other 364 days of the year.
Economic inequality is not just a moral issue; it’s an economic one as well.
生命最伟大的礼物是能够想象它的另一种可能。