If you want to be happy, set a goal that commands your thoughts, liberates your energy, and inspires your hopes.

If you want to be happy, set a goal that commands your thoughts, liberates your energy, and inspires your hopes.

如果你想要快乐，设定一个目标，控制你的思想，释放你的能量，激发你的希望。

-- Andrew Carnegie 安德鲁·卡内基