My major is an operations research.
It can solves many matters of society by using math.
It is a very useful subject.

I like math very much.
I feel very good when I can solve a difficult math question. 
Math is beautiful and I can say math is a piece of arts.

An operations research is not beautiful in the means.
I realized that I like beautiful things.
Even if they are not useful, I like them.
Then I'm interested in arts, aesthetics and so on.

But I must study an operations research.
I think it's a difficult situation.