"To read is to travel without moving; to write is to move without traveling."
失败并不总是错误,它可能只是一个人在特定情况下能做到的最好。真正的错误是停止尝试。
预测未来的最好方法就是发明它。
There is no perfect knowledge which can be entitled ours, that is innate; none but what has been obtained from experience.