For the title reference, go here. It really amazes me how different my children are, and how different they've been from the very beginning, even before they were born. Obviously I knew that they'd be different, but I really didn't expect that so soon. From the moment they were born, they've looked and acted different. Both were born with dark hair (though K's quickly went lighter), but C was born with brown eyes whilst K's were dark blue. C has a darker complexion than K, too.
But what is more striking is the difference in their personalities from the very beginning. K was none too pleased when he was born (though I can't blame him, since he'd had a monitor screwed into his scalp and was extracted by ventouse), while C was completely calm (ah, the difference the birth and setting can make). K wanted to be right next to me, touching me, in order to sleep, but if I was holding him, he would sleep anywhere. C didn't care if I was holding her - when 20.00 rolled around, she'd better be in bed nursing. She would not be content being held or nursing with me sitting up.
K has always been a comfort nurser, but C rarely nurses for comfort, instead being all business. I'm sure at least some of that, though, is due to the fact that she has a sensitive stomach and was quite sensitive to what I ate at first, so feeding wasn't much comfort to her.
They're not completely different, of course. Both love Star Trek and books and tackling and chasing and roaring. K likes to teach C about various things, and he even lets her "be a zilla" and destroy the train tracks sometimes. (He imitates her in that at times, too). They are their own persons, though, and it's great.