Young and logical - a rather odd combination fo words, but Vulcans were odd creators. Especially a half-Vulcan. But Kirk liked to think that he and Spock had grown together, feeding off each other into the men they had become and were yet becoming. He couldn't have made it near so far without him, after all. Thankfully, he never seemed to partake took heavily in the shenanigans of the crew, though Kirk noted he really never did much to curb them either...

"Guess your Number One got things very smoothed out the night before. I'm not sure Spock would trust me to handle that hungover without tucking in the corners, so to speak, the night before," he shook his head. "There was, one time though, that instead of getting my physical in the medbay, I somehow convinced Bones to let me show him I was fit doing some gymnastics. It somehow turned into a near ship wide spectacle."