Any book where characters’ intelligence are shown?

Hi guys im currently obsessed with ken follet’s kingsbridge novels because his characters are amazing. He really mastered the “show dont tell” storytelling on smart characters. The dialogues between the characters in his series are so entertaining, as the arguments of each characters make sense and really helped them to achieve their goals. The plotting and scheming is so well done, im hoping to find book of similar style.

I was wondering if anyone knows another book with characters whose intelligence is being shown through their dialogue/actions?

Another book i find similar are game of thrones (tyrion & margaery), and the first dune book (lady jessica).