Although it is a discipline with a venerable heritage, comparative Semitic linguistics has long suffered from the difficulty of finding an introduction that does not already require a specialists' knowledge of the field. The primary languages Gray selected were Hebrew, the language most Semitic readers begin with, and Arabic, the most widely known Semitic language. The result is this user-friendly introduction.

Pali and New Persian are without influence on one another, yet they show a striking similarity in their development. All coincidences between the two languages are due to the operation of the laws of development which govern the Indo-Iranian languages.

Bhartrharinirveda of Harihara is a play that glorifies the Yoga philosophy, which teaches that the summum bonuzz is the discrimination and separation of soul from matter, thus leading through renunciation of the world to isolation of the ego.