Knowledge is valuable only when it is shared.
怀疑是智慧的开端。
Think wrongly, if you please, but in all cases, think for yourself.
历史研究不仅关乎过去,也关乎理解现在和预见未来。
采矿业必须进化否则就会过时,没有中间地带。
确保和平的唯一方式就是随时准备战争。