古人说:在天愿为比翼鸟,在地愿为连理枝。古人又说:儿女情长,英雄气短。古人说:曾经沧海难为水,除却巫山不是云。古人又说:天涯何处无芳草。爱情是什么?理想化一点的说法是,爱情是神圣和纯洁的,是人类的至高情感。生理学一点的说法是,爱情是脑中多巴胺和体内荷尔蒙分泌综合作用的产物。起源化一点的说法是,爱情是原始社会的女人为了让男人把打猎来的食物给她吃而发明出来的东西。现代一点的说法是,爱情是奢侈品,有最好,没有也能活。 The ancients said: in the days of willingness to be the lovebirds, in the field willing to even branch. The ancients also said: children love, heroic shortness of breath. The ancients said: Once the sea is hard for the water, except Wushan is not a cloud. The ancients also said: End of the World without grass. What is love? Idealized that love is sacred and pure, is the supreme human emotion. Physiological point is that love is the brain dopamine and the secretion of hormonal products. Originally, it is said that love is something invented by a woman of primitive society in order for a man to eat her food from hunting. Modern point of view is that love is a luxury, there is no best.