Leadership in forestry means making tough decisions today for a better tomorrow.
The true writer is one who writes because he has something to say, not because he wants to say something.
Positive emotions broaden our awareness and allow us to see more possibilities.
购买旧书,它们的词与新词相同,也可以去图书馆。
The challenge of modern physics is not just to understand the universe, but to understand our place within it.