Sustainability isn't an option; it's a responsibility we owe to future generations.
The greatest hazard of all, losing one’s self, can occur very quietly in the world, as if it were nothing at all.
Reading furnishes the mind only with materials of knowledge; it is thinking that makes what we read ours.
你必须承担个人责任。你无法改变环境、季节或风,但你可以改变自己。这是你可以掌控的事情。
The best time to plant a tree was twenty years ago. The second best time is now.