Sun Tzu Li Quan and Du Mu. Of the military texts written before the unification of China and Shi Huangdi's subsequent book burning in the second century BC, six major works have survived. During the much later Song dynasty, these six works were combined with a Tang text into a collection called the "Seven Military Classics". As a central part of that compilation, "The Art of War" formed the foundations of orthodox military theory in early modern China. Illustrating this point, the book was required reading to pass the tests for imperial appointment to military positions. Sun Tzu's The "Art of War"
The Book of Taliesyn band's singer Rod Evans are very functional to the music and the marketing Deep Purple's record label was building up for the American hippie audience. Evans took inspiration for the fantasy-themed "Listen, Learn, Read On", which contains lyrical reference to the album's title, from the 14th-century Welsh manuscript Book of Taliesin, a collection of poems attributed to the 6th-century poet Taliesin. The title and cover art of the album were also inspired by the manuscript. Instead psychedelia and its rituals play a large part in the lyrics of "Shield". Simper thinks that Evans' lyrics are "far better than anything (...)