"Your most unhappy customers are your greatest source of learning."

我还以为我有一朵独一无二的花呢，我有的仅是一朵普通的花。这朵花，再加上三座只有我膝盖那么高的火山，而且其中一座还可能是永远熄灭了的，这一切不会使我成为一个了不起的王子。

"If there's a book that you want to read, but it hasn't been written yet, then you must write it."

The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.

Always design with the end user in mind; functionality should never be sacrificed for aesthetics.