It is further observed that the Veda thus apprehended through reading spontaneously gives rise to the ideas of certain things subserving certain purposes. A person, therefore, who has formed notions of those things immediately, i.e. on the mere apprehension of the text of the Veda through reading, thereupon naturally applies himself to the study of the Mimâmsa, which consists in a methodical discussion of the sentences constituting the text of the Veda, and has for its result the accurate determination of the nature of those things and their different modes. Through this study the student ascertains the character of the injunctions of work which form part of the Veda, and observes that all work leads only to non-permanent results; and as, on the other hand, he immediately becomes aware that the Upanishad sections--which form part of the Veda which he has apprehended through reading--refer to an infinite and permanent result, viz. immortality, he applies himself to the study of the Sârîraka-Mîmâmsâ, which consists in a systematic discussion of the Vedânta-texts, and has for its result the accurate determination of their sense. That the fruit of mere works is transitory, while the result of the knowledge of Brahman is something permanent, the Vedanta-texts declare in many places--'And as here the world acquired by work perishes, so there the world acquired by merit perishes' (Ch. Up. VIII, 1,6); 'That work of his has an end' (Bri. Up. III, 8, 10); 'By non-permanent works the Permanent is not obtained' (Ka. Up. I, 2, 10); 'Frail indeed are those boats, the sacrifices' (Mu. Up. I, 2, 7); 'Let a Brâhmana, after he has examined all these worlds that are gained by works, acquire freedom from all desires. What is not made cannot be gained by what is made. To understand this, let the pupil, with fuel in his hand, go to a teacher who is learned and dwells entirely in Brahman. To that pupil who has approached him respectfully, whose mind is altogether calm, the wise teacher truly told that knowledge of Brahman through which he knows the imperishable true Person' (Mu. Up. I, 2, 12, 13). 'Told' here means 'he is to tell.'--On the other hand, 'He who knows Brahman attains the Highest' (Taitt. Up. II, 1, 1); 'He who sees this does not see death' (Ch. Up. VII, 26, 2); 'He becomes a self-ruler' (Ch. Up. VII, 25, 2); 'Knowing him he becomes immortal here' (Taitt. Âr. III, 12, 7); 'Having known him he passes over death; there is no other path to go' (Svet. Up. VI, 15); 'Having known as separate his Self and the Mover, pleased thereby he goes to immortality' (Svet. Up. I, 6).