give up

Secondly， we are born with wide－eyed， enthusiastic wonder as anyone knows who has ever seen an infant's delight at the jingle of keys or the scurrying of a beetle． It is this childlike wonder and illusion that gives enthusiastic people such a youthful air， no matter how old they are． For example， the famous cellist Pablo Casals would start his day by playing Bach. Music， for him， was an elixir that made life a never－ending adventure． As author and poet Samuel once wrote， “Years wrinkle the skin， but to give up enthusiasm wrinkles the soul.”