“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。

我不必成为任何人的榜样。

殖民地是一个新人类计划将被测试的地方，在那里一个无国界、无种族、无国家、无阶级、无性别、无宗教、无货币、无财产和无战争世界的梦想将被实现。

He walked out in the gray light and stood and he saw for a brief moment the absolute truth of the world. The cold relentless circling of the intestate earth. Darkness implacable. The blind dogs of the sun in their running. The crushing black vacuum of the universe. And somewhere two hunted animals trembling like ground-foxes in their cover. Borrowed time and borrowed world and borrowed eyes with which to sorrow it.