Beauty is truth, truth beauty,—that is all ye know on earth, and all ye need to know.

The more we learn about sensory biology, the more we realize how intricate and finely tuned our nervous system is.

经国济世之道来自广博的学问，它才有不竭的源泉；修心养性之道体现在建功立业上，它才算得上圆满。除了建功立业之外，世上没有真正的学问；要寻求修心养性之道，必须到圣贤的文章中去找

I went to the woods because I wished to live deliberately. I wanted to live deep and suck out all the marrow of life, to put to rout all that was not life.

译文：过去的时间逝去了不可追回，今天的日子也会在转瞬之间过去。赏析：已经过去的就让它过去，不必再追悔。我们要活在当下，珍惜每一天。与其用泪水悔恨昨天，不如用汗水拼搏今天。