Thanks so much for suggesting some entries. As I have seen a few others come in, in addition to yours, I am realizing that I would like to stay away from Albert Einstein's somewhat goofy-looking face. I am hoping to be a little more serious than that, because I want to speak to adults, as opposed to children. Of these three, Albert seems a little less goofy in #6, which is my favorite from these entries. Although I haven't totally made up my mind yet, I am leaning toward not having his face in the logo, trying to make it a little simpler and more sophisticated.
I get it ... a bit rough when you spend time on something and it isn't even the right direction... but that is what happens.... hope you like the new direction better.