That's such a wicked question, don't you think?
Beauty is a concept that changes definition during the ages, but it's also a subjective notion.
The interpretation that's inexorable is internal beauty. When someone is good inside, the person is always beautiful to the eyes of the viewers.
So, if I had to say what's beautiful to me, I wouldn't point out the aesthetic sense of beauty. Beauty, to me, is the emotional sense of humanity one can have. Beauty is, beyond that, being a good person, being good to others, being sensible to others, empathize.
Be good, be beautiful.
As Antoine de Saint-Exupery wrote:
What is essential is invisible to the eye.
@rambo @missy @sean