A dear friend from college stumbled across my blog and wrote me that "You still seem, in many ways, like the old Brad I remember--slightly irreverent, always pushing the edge, always analytical."
My first reaction was: great--twenty years without any personal growth or change. My second reaction was to be thankful for the various negative qualities that she didn't say... the emotional IQ of a cucumber, the attention span of a chipmunk, and various other shortcomings.
Mostly, though, I was interested in her description. I see myself as constantly changing, either in interests or personal issues or whatever, but I suppose at the core I have some stable personality that, for better or worse, defines me. I don't know why this surprises me given my familiarity with personality stability in the social psychology literature, but it still does.