如果你每天都履行自己的义务，你就不必担心未来。
If you fulfill your obligations everyday you don't need to worry about the future.
释义：善于把握事物本质的人，不会违背金属和水的本性；善于制作器物的人，不会改变物体的形状和用途。
The more you do, the more you learn. The more you learn, the more you can do.
In business, if you're not moving forward, you're falling behind.
I earnestly wish to point out in what true dignity and human happiness consists.
忠于自己，但永远保持学习的心态。