I remember Cadderly saying something to the protagonist somewhere near the end of the game.

I just started reading "The Cleric Quintet" by R.A. Salvatore (decent so far) and was just wondering what he says in the Baldur's Gate game.

TIA.

IIRC, he just says hello and how much he's heard about you...then he leaves, citing that he hasn't enough time to talk. That's the gist of it, I think.

Who is Cadderly?

Read "The Cleric Quintet"