The Philosopher's Stone is a compilation album by Northern Irish singer-songwriter Van Morrison released in 1998 (see 1998 in music). 　　The songs released on this 2-CD thirty-track album were previously unreleased outtakes from 1969 to 1988. The album features twenty-five songs that had never been released and alternative renditions of "The Street Only Knew Your Name" (Inarticulate Speech of the Heart), "Wonderful Remark" (The Best of Van Morrison), "Real Real Gone" (Enlightenment), "Joyous Sound" (A Period of Transition), "Flamingos Fly" (A Period of Transition) and "Bright Side of the Road" (Into the Music). 　　Three songs on the album were evidently intended for Morrison's unreleased 1975 album Mechanical Bliss. "Twilight Zone", "Foggy Mountain Top" and "Flamingos Fly" were all mixed in 1974 just before Mechanical Bliss was due to come out.