Carry it on your tongue: German 'heart' idioms What is lying on your heart? Or more alarmingly, why has your heart slipped into your pants? The German language is filled with idioms with the word "heart." 10 German phrases with 'heart' Mit Herz und Seele dabei sein "To be there or take part with heart and soul," as this expression in German literally translates, means you are doing something passionately or wholeheartedly, that you are completely immersed in it. Not to be confused with: "Die beiden sind ein Herz und eine Seele," which refers to two people who are as one, who get along really well.