Constants aren't.

You can't lead a cavalry if you think that you look funny riding a horse.

But you see-you-you can't-so-you can't so well argue about these things. I've learned that it's better that I-I don't talk about it.

I seem to be thinking rationally again in the style that is characteristic of scientists. However, this is not entirely a matter of joy as if someone returned from physical disability to good physical health.

I did have strange ideas during certain periods of time.

The mathematics faculty were encouraging me to shift into mathematics as my major and explaining to me that it was not almost impossible to make a good career in America as a mathematician. So I... became officially a student of mathematics. And in the end I had learned and progressed so much in mathematics that they gave me an M.S. in addition to my B.S. when I graduated.