Happiness is a good flow of life； the conviction that you are taking part in the universe's purpose.
"Every book is a new adventure, a new world to explore."
The real moat is users' dependence on you.
Time is a slippery thing: lose hold of it once, and its string might sail out of your hands forever.
The stone we extract today will shape the landscapes of tomorrow.
追求知识不仅是心灵的旅程，也是心灵的旅程。