Play

At college, when we played soccer together, I used to say that you could really get to know a lot about a person by how he moves on the soccer court; that athletic self-expression was no less telling than verbal expression.
Then today I read this:

"We obtain better knowledge of a person during one hour's play and games than by conversing with him for a whole year." --Plato

I wouldn't word it quite this strongly (those ancients did have a way of exaggerating for effect), but I was surprised to see this old idea of mine resurface, and come from Plato no less!