You get more nervous in front of a lot of people. That's why, when you play a concerto, you play with a small orchestra, in some place where you don't feel that it is as important as Carnegie Hall.
In Paris they have special wheelchairs that go through every doorway. They don't change the doorways, they change the wheelchairs. To hell with the people! If someone weighs a couple more pounds, that's it!
The difference is that with Ebola, it is such a devastating disease, and there is still no cure. They're still working on vaccines. The fact of the matter with polio, there is a cure; there is a vaccine.
I'm now doing three things: concerts, conducting, and teaching, and they each support each other. I learn to see things from different perspectives and listen with different ears. The most important thing that you need to do is really listen.
For people who are really talented, what you don't say becomes extremely important. You have to judge what to say and what to leave alone so you can let the talent develop.
When you play a concerto with a small orchestra, you don't feel it is as important as Carnegie Hall. You try to work out all the little problems. Once that's all done, trust comes in.