The art of music is so deep and profound that to approach it very seriously only is not enough. One must approach music with a serious rigor and, at the same time, with a great, affectionate joy.

Do nothing for effect. Do it for truth.

Everything we know by heart enriches us and helps us find ourselves. If it should get in the way of finding ourselves, it is because we have no personality.

It is easier to analyze a work in its form, in its evolution, than simply to love it with all the living forces of our heart. It is easier to define its peculiarities and its details than to draw out of it its emotion, its thought.

The Constitution of the United States is not a mere lawyers' document; it is a vehicle of life, and its spirit is always the spirit of the age.

To study music, we must learn the rules. To create music, we must break them.

There is nothing boring in life except ourselves.