love is sacrifice
The true love,is may pay for opposite party all,certainly includes sacrifices own all.But,is not to sacrifice itself but loves opposite party.
Usually,we better will protect ourselves,will cause the healthy longevity,can thus better long-time consider oneself love human.Does not love own person,how to understand loves others,and has ability to love others.Therefore,must love others,must first love itself.But,when both cannot give dual attention,in the crisis time,can only choose itself perhaps the love person,a time,the true love is may sacrifice itself,but protects the spouse.
Looks like the mother,the father protects the child,may sacrifice itself,let alone the humanity,will be the lion,the tiger will also do this.