Think of the music of Beethoven, the last quartets are considered to be the greatest quartets ever written and also a level of profundity that Beethoven had never reached before.

想想贝多芬的音乐，人们认为，最后四重奏，是他写的最伟大的四重奏，并且到达了更深奥的层次，贝多芬从未到达过这个层次。