It really depends what you mean by intelligence; wisdom, raw knowledge or logic. I suppose as a general list : I can point out and accept my own faults, and the faults of those I care about. I win 9/10 arguments/debates I get into (Excluding ones on the internet). Have good general knowledge outside of pop-culture/media. Got A's and B's in my maths and three sciences GCSEs. How other people can be more intelligent: Be observant and remember things. At least half of what I know comes from random incidents and casual conversation rather than devoted learning.