除非不再尝试，否则就没有失败。
There is no failure except in no longer trying.
The writer’s duty is to tell the truth, even when it is uncomfortable.
"We all have our time machines. Some take us back, they're called memories. Some take us forward, they're called dreams."
What worries you, masters you.
解释：怀揣珍宝的人，不要在晚上行走；担负大任的人，不能对敌人掉以轻心。