The best designs come from understanding the needs of the people who will use them.
成为英雄的最大障碍是怀疑自己是否会证明自己是个傻瓜;真正的英雄主义是抵制这种怀疑;最深刻的智慧是知道何时应该抵制,何时应该服从。
永远不要冒你无法承受的损失的风险。
The charm of study consists chiefly in the satisfaction which the mind experiences in acquiring knowledge.