Stronger (What Doesn’t Kill You) is a song by US singer Kelly Clarkson from 2012. It talks about finding your strength (力量) and feeling better after a hard time. The song has a mix (混合) of dance and pop music. It is happy and heartwarming. The song’s chorus (副歌) is from a famous saying by the German philosopher Friedrich Wilhelm Nietzsche (弗里德里希·威廉·尼采): “That which does not kill us makes us stronger.”