每一个挑战都是学习和成长的机会。
Every challenge is an opportunity to learn and grow.
数学的美在于它是一种可以以其他任何方式都无法描述宇宙的语言。
Short-term gains in forestry often lead to long-term pains.
别让你的梦想只是梦想。
No arts; no letters; no society; and which is worst of all, continual fear, and danger of violent death; and the life of man, solitary, poor, nasty, brutish, and short.