我嘅音乐系我嘅生命,我会用一生去做好佢。
The purpose of a habit is to remove that action from self-negotiation. You no longer expend energy deciding whether to do it. You just do it. Good habits can range from telling the truth, to flossing
自私基因理论并不是关于日常意义上的自私的理论。它是关于行为进化的理论。