In preschool, I was about 4 years old. The earliest memory I remember is playing in the playground by a tree filled with crawling larvae. They were ladybug larvae. I remember being amazed by it and always wanted to play there every day with the ladybugs. I remember trying to catch all the ladybugs, follow them, and carry them back to the tree trunk.
I feel that my personality is still the same, considering the fact that I am still a curious person, who wants to know about many things.
I remember having a similar experience. I was (and am) an insatiably curious person. I remember spending several days during preschool studying clouds, how they worked, what they were, how they stayed up there. I tries to jump off of the swing set as high as I could so I could reach them and find out for sure.
When I was younger, I'd go into my backyard and dig holes into the ground thinking I'd find buried treasure or I'd discover another world. I also snooped around my neighborhood writing down everything I saw. I'm more or less the same curious person.