计算复杂性的研究不仅仅是关于解决问题,还在于理解可计算性的极限。
“孟母三迁”的故事我们都不陌生,环境对人的成长和身心修养起着重要作用。人际交往的圈子也是重要的环境,对自己身边的环境要慎重选择,不随不良环境而堕落。
"Traveling is a brutality. It forces you to trust strangers and to lose sight of all that familiar comfort of home and friends. You are constantly off balance. Nothing is yours except the essential things: air, sleep, dreams, the sea, the sky - all things tending towards the eternal or what we imagine of it."