Grau is’ im Leben alle Theorie – aber entscheidend is’ auf’m Platz. All theory in life is gray, but what decides is on the pitch. The saying is credited to Adi Preißler, who won the German championship with Borussia Dortmund in 1956 and 1957. Its first half echoes Goethe’s Faust: Grau, teurer Freund, ist alle Theorie. The second half, entscheidend is auf’m Platz, is in everyday use. It means that talk and plans count for little until the performance shows what they are worth.