Teaching is really very, very important. I always tell my students that you should find an opportunity to teach. When you teach others, you teach yourself.
When I came to the United States, I appeared on the Ed Sullivan Show as a 13-year-old, and I played a Mendelssohn Concerto, and it sounded like a talented 13-year-old with a lot of promise. But it did not sound like a finished product.
I have a very simple philosophy. One has to separate the abilities from the disabilities. The fact I cannot walk, that I need crutches or a scooter or whatever it is, has nothing to do with my playing the violin.
I met my wife in music camp. She's got great ears, and we have a relationship where she's not afraid to tell me anything. If something's going on in my playing, she will tell me about it, and that's very, very important.