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 schoolhouse 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 echoes round the room I know I must be leaving In the hope that one day 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