Can you imagine young people nowadays making a study of trigonometry for the fun of it? Well I did.

We were suddenly faced with the necessity of training a lot of young men in the art of navigation.

When you're young, you don't realize the sacrifices that people are making for you.

When I was in the fourth grade, I became intensely interested in geography and I learned it well.

You have to compete with others in the field. Sometimes the competition gets pretty fierce because you're competing for funds or grants to do your work, the financial work.

The more you pander to what is, presumably, the taste of young people, the more you corrupt.