Every life is in many days, day after day. We walk through ourselves, meeting robbers, ghosts, giants, old men, young men, wives, widows, brothers-in-love, but always meeting ourselves.
确保和平的唯一方式就是随时准备战争。
在物理学中，近似的艺术往往比追求精确解更重要。
The boundaries of our knowledge are the frontiers of our curiosity.
"Understanding the limits of computation is as important as expanding its capabilities."
