[passion__desire]

In similar vein, the following question is very apt. Please read the question because it captures all of our intuition when we try to understand something.

https://physics.stackexchange.com/questions/46573/what-are-t...

What are strings made of?

One answer is that it is only meaningful to answer this question if the answer has physical consequences. Popularly speaking, string theory is supposed to be the innermost Russian doll of modern physics, and there are no more dolls inside that we can explain it in terms. However, we may be able to find equivalent formulations.