Must Be Leaving

I know I must be leaving, It's a cold and it's a freezing afternoon. I know I must be leaving, From this school house that you might see one day soon. But almost every night, I keep having this recurring dream, That I can divide ten by three. But it's just a dream, And it works for me. And it works for me. I know I must be leaving. As the sound of silence echos round the room. I know I must be leaving, In the hope that one day maybe we'll pull through. But almost every night, I keep having this recurring dream, That I can divide ten by three. But it's just a dream. And it works for me. And it works for me.