A miner's skill and dedication are just as valuable as the coal they bring to the surface.
I think the most important thing in life is to be honest with yourself.
一个问题的价值与其说在于得出答案,不如说在于它迫使潜在的解决者产生的想法和尝试的想法。
没有孩子的民族将面临无望的未来;没有树木的国家将面临更加无望的未来。
过去是一个谜,历史学家是试图将碎片拼凑在一起的人。