From Lostpedia:
Name reference
The real-life Dr. Richard Alpert (aka Ram Dass) is a noted psychologist and Hindu spiritualist. In 1963, he was dismissed from Harvard University for his research (in collaboration with Timothy Leary, Aldous Huxley, Allen Ginsberg and others) into psilocybin, LSD-25, and other psychedelic chemicals. He later traveled to India, where he was given his Hindu spiritual name "Ram Dass", which translates as "Servant of God". Alpert wrote of his experiences in an unusual tome entitled Be Here Now, and founded the Hanuman Foundation. See Bio and Wikipedia entry. Damon Lindelof confirmed that the character of Alpert was indeed named after a famous person. [1]
Richard Alpert's colleague Aldous Huxley wrote a book called Island, which has been referenced in Lost, most specifically with regard to the Pala Ferry; Pala is a Utopian island in Huxley's book.
The first episode of The Carpenters short-lived TV series Make your Own Kind of Music[2] featured a guest appearance by musician Herb Alpert[3]. Different versions of the show's theme song are featured in several Lost episodes, most notoriously during the opening sequence of the Season 2 premiere. ("Man of Science, Man of Faith"). Richard is also the first name of the male half of The Carpenters.
Richard is of Old German origin, and its meaning is "powerful leader".
Illana refers to Richard as "Ricardus" and it is Latin for Richard.