They are looking for signs of 'intelligent life' [=creatures that can learn and understand things] on other planets.
He spoke/wrote 'intelligently' about the changes that are needed.
He's a hard worker but he's not very 'intelligent'.
(..) how many times were you in the company of these dragons? - Many times. - And did they ever harm you? Never. Dragons are intelligent. More intelligent than men according to some maesters. They have affection for their friends and fury for their enemies. - I am their friend. (..)2016 TvShow: Game of Thrones Title: Home Season: 6 Episode 2