The Only Quote in my Classroom

There are many teachers with quote after quote up on their classroom walls.  I'm not one of those people. I've got nothing against them...I guess I've just never found that many quotes that I think could really make a difference. 

This week, however, I found myself referring to a quote I heard a while back again and again and again.  

Particularly useful in maths, where children must do many calculations or repetitive activities, I think this quote has a space in my classroom.  I was able to explain my personal experience with the quote when learning the guitar. I told them how I was learning chords to a song and the first time I got it right I thought I was done.  Then the next time I played the song, I got the chords wrong and I realised I hadn't learned the song completely until I'd practised it until it was never wrong.