This Upanishad contains some rather striking passages: "Whatever man attains, he desires to go beyond it; if he should reach heaven itself he would desire to go beyond it" (2. 3. 3. 1). "_Brahma_ is the A, thither goes the ego" (2. 3. 8. 7). "A is the whole of Speech, and Speech is Truth, and Truth is Spirit" (2. 3. 6. 5-14).[16] "The Spirit brooded over the water, and form (matter) was born" (2. 4. 3. 1 ff.); so physically water is the origin of all things" (2. 1. 8. 1).[17] "Whatever belongs to the father belongs to the son, whatever belongs to the son belongs to the father" (_ib_.). "Man has three births: he is born of his mother, reborn in the person of his son, and finds his highest birth in death" (2. 5). In the exposition of these two Upanishads one gets at once the sum of them all. The methods, the illustrations, even the doctrines, differ in detail; but in the chief end and object of the Upanishads, and in the principle of knowledge as a means of attaining _brahma_, they are united. This it is that causes the refutation of the Vedic 'being from not-being.' It is even said in the [=A]itareya that the gods worshipped breath (the spirit) as being and so became gods (great); while devils worshipped spirit as not-being, and hence became (inferior) devils (2. 1. 8. 6). It was noticed above that a king instructed priests. This interchange of the rôles of the two castes is not unique. In the K[=a]ush[=i]taki Upanishad (4. 19), occurs another instance of a warrior teaching a Brahman. This, with the familiar illustration of a Gandh[=a]ra (Kandahar) man, the song of the Kurus, and the absence of Brahmanic literature as such in the list of works, cited vii. 1, would indicate that the Ch[=a]ndogya was at least as old as the Br[=a]hmana literature.[18]