Socrates answered this question years ago


You are intelligent if

  • You are infinitely curious. You can learn from any body to every body.
  • You are most humble person out there. You consider the fact that every one has experiences to share and you have an opportunity to learn.
  • Your self awareness is sky high. You understand futility of every thing.
  • You recognize the fact that noting is permanent and no bliss is perfect.

via What are some signs of intelligence?