Answer:
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
What is it which builds things up? Lays mountains low? Dries up lakes, and makes things grow? Cares not a whim about your passing? And is like few other things, because it is everlasting?
Gets rid of bad ones, short and tall. Tightens when used, one size fits all.
A hill full, a hole full, yet you cannot catch a bowl full.
I have one, you have one. If you remove the first letter, a bit remains. If you remove the second, bit still remains. If you remove the third, it still remains.
This food is a tortilla filled with cheese and sometimes chicken before being heated or cooked.