Clue: Passion dominates game, we hear, in pointless tennis position (4,8,3)
Answer: LOVE CONQUERS ALL
Explanation: Definition: Passion dominates
 [ LOVE ALL](the score/position in a tennis match when neither side has scored a point/is pointless) **containing**(…, in …) **homophone of**(…, we hear) "conkers"(a children's game played with conkers, nuts of the horse chestnut tree).