one of his quotes is because isaac newton was smarter than everybody else didn't give him the right to be the master of anyone. chris: land-owning white people. and not women. >> not women. certainly i think he probably would have had a greater problem with women in equality than blacks. but certainly hierarchy arcal and some notion that the enlightenment would change things. chris: this is a larry king question -- did he love her? >> we don't know. we know this was a relationship that went on for almost 40 years. you can make a judgment about that. chris: let's ask an obvious question. you get the best question here. does president obama, as he goes into his second term, which seems to be the requirement for greatness, you have to get the second term. that's a notch on your belt. does he think a lot about his ranking in history, how he's going to do? >> all evidence says yes, and he's thought about it for a long time. circa 2006, 2007, he's just out of the illinois state senate. he's telling people, even though he doesn't have a lot of managerial, national security, economic, washingt

benjamin franklin is said to be the isaac newton of electricity, an enormously prominent scientist in his day before the 13 colony-type thing and before signing the declaration of independence. ben franklin, he did a lot in electrostatics. so this then is negatively charged and the cat's fur then would be? positive. positive. which, by the way, underlies a very important principle called the conservation of charge. and the conservation of charge simply says that, "hey, gang, whatever charge you got, "it's what you got. "you don't make any more, you don't make any less. all you do is transfer it from one place to another." it's like maybe a brick road. there's so many bricks in the road. now, you take some of the bricks off the road and put them on the sidewalk. what's the total number of bricks i have before and after? same. the same. i've just put them from one place to another. and every brick in the sidewalk is matched by a hole in the road. do you see that? so we just take it from place and put another. so if i put a certain charge on here-- let's say a millionth of a coulomb-- co