我已经不再年轻，不再知道一切。
"I am not young enough to know everything."
分别时南飞的鸿雁刚刚北去，今日北归的大雁又已南飞
我不知道我为什么爱你，但是我爱你。
I think the best relationships are the ones where you can be completely yourself.
As in geometry the most natural way of beginning is from a mathematical point, so is the same method in observations and natural history the most genuine, simple, and instructive.
艺术是光进入的伤口。