Sometimes the smallest pearls of wisdom are found in the most unexpected places, and have the power to blow apart your entire worldview. 

I remember once, I was trawling through an internet group about piano pedagogy. I don't remember why, and I don't remember what this particular thread was about. It must have been related to that constant struggle: How do we stop our students from playing so fast all the time?  I see it plenty: students are in the middle of learning a piece, and they come in to the lesson and launch into it at performance tempo.  The phrase "Let's try it slower" is unquestionably in my top five most-repeated phrases (along with "Let's have your left hand... your other left hand... there we go.") 

So, teachers were offering their tactics for how they manage this. And one teacher... I don't remember his name, or where he was from. But he offered this insight that changed how I taught students forever thereafter. 

He said, "I tell my students all the time... slow is easy!