Smart attended the Glasgow Academy before joining the military in 1945, serving until 1948, in the British Army Intelligence Corps where he learned Chinese (via Confucian texts) mainly at the London School of Oriental and African Studies and had his first extended contact with Sri Lankan Buddhism. It was this experience that roused him from what he called his "Western slumber with the call of diverse and noble cultures." Leaving the army – as a captain – with a scholarship to Queen's College, University of Oxford, he reverted to his Glasgow major, classics and philosophy, mainly because Chinese and Oriental studies in those days had "pathetic curricula". However, for his B.Phil. work he returned to world religions, writing what he later described as "the first dissertation in Oxford on philosophy of religion after World War II".