The concept of loss aversion explains why we often prefer avoiding losses over acquiring gains.

I have to say to myself that some birds aren't very close. Their feathers are just too bright. When they fly away, you know it's a sin to lock them up, and you'll be inspired by them. Still, the place you live in is that much more drab and empty that they're gone. I think I really miss my friends.

译文：人如果没有长远的考虑，必然会埋下深重的祸根。在灾祸还未萌芽时，又有谁能理解提前预防的心思呢?