能源的真实成本必须同时考虑其生产和遗留影响。
The battle of life is already half won by the young man who is brought personally in contact with high officials; and the great aim of every boy should be to do something beyond the sphere of his duties--something which attracts the attention of those who over him.
Fearless is not the absence of fear. It's not being completely unafraid. It's having a lot of fears, but jumping anyway.
史记