Finally, I would like to assure my many Buddhist, Christian, Hindu, Jewish, and Muslim friends that I am sincerely happy that the religion which Chance has given you has contributed to your peace of mind (and often, as Western medical science now reluctantly admits, to your physical well-being). Perhaps it is better to be un-sane and happy, than sane and un-happy. But it is the best of all to be sane and happy. Whether our descendants can achieve that goal will be the greatest challenge of the future. Indeed, it may well decide whether we have any future.

In his biography of Stanley Kubrick John Baxter cites Clarke's homosexuality as a reason why he relocated due to more tolerant laws with regard to homosexuality in Sri Lanka. Concept of the geostationary communications satellite

Clarke contributed to the popularity of the idea that geostationary satellites would be ideal telecommunications relays. After a drawn-out development process – which Freeman attributed to difficulties in getting financing – it appeared that in 2003 this project might be proceeding but this is very dubious.

Clarke served in the Royal Air Force as a radar instructor and technician from 1941 to 1946. That year he discovered the underwater ruins of the ancient Koneswaram temple in Trincomalee. In 1956 Clarke emigrated to Sri Lanka largely to pursue his interest in scuba diving.