出自《魏源集·默觚下·治篇五》。三代以上，天都跟现在的天不一样，地都跟现在的地不一样，人也跟现在的人不一样，物也和现在的物不一样。
The hardest thing to explain is the glaringly evident which everybody had decided not to see.
The most valuable asset any company has is its people.
Don't watch the clock; do what it does. Keep going.
The best artworks are those that disappear into life.