The only way to do great work is to love what you do.

经过无数代人的努力，你才达到了现在的水平。也许需要一点感激之情。如果你要坚持让世界按你的方式弯曲，你最好有自己的理由。

The natural price of labor is that price which is necessary to enable the laborers, one with another, to subsist and to perpetuate their race, without either increase or diminution.

However difficult life may seem, there is always something you can do and succeed at.