Although Kay did not attend medical school, he did from an early age grasp his mission in life. And his career, whether early on while serving in Africa or more recently as he campaigned in Taiwan for the ROC to provide greater foreign medical aid, has consistently shown a missionary spirit.
並非醫學院科班出身的郭惠二，在他已近「從心所欲，不踰矩」的歲月裡，不管是早期在非洲服務奉獻，或是近年在台灣不遺餘力的推動醫療援外，他的一生就是傳教士精神的體現。