Listen, as the ancient sage unfolds the mysteries of time and dharma. He begins by recounting how the characteristics of the ages—those cycles of virtue and decline—have come and gone for humanity in their destined order. Now, he promises to reveal the sequence of manvantaras, the great ages presided over by Manus, that arise within this very kalpa. In each kalpa, he says, there are fourteen such manvantaras, both those that have already passed and those yet to come, and all are present in the unfolding of these cycles. He offers to describe, in detail and in proper sequence, the existence of beings in each age—their origins, their lifespans, and how these are shaped by the cosmic order. In each age, beings live for the span of a yuga, or sometimes a little less, and so it is through all fourteen manvantaras. The lifespans of humans, animals, birds, and immobile creatures are entirely determined by the laws of the yugas. With each passing age, lifespans have diminished, shaped by the inevitable decline set by time itself. Observing the present age of Kali, the sage notes how longevity has waned. Now, the highest lifespan for humans is said to be one hundred years. Yet, in the distant Kṛta age, gods, asuras, humans, yakṣas, gandharvas, and rākṣasas all shared a similar stature and vigor. In that golden age, the eight divine races stood ninety-six finger-breadths tall, and even now, those who attain greater size are measured by the same standard. As the ages shift and yugas meet, the stature of humans changes. At the junctions of these yugas, humans measure, in succession, seven times seven finger-breadths, matching the gods and asuras. In the Kali age, it is said, the human body measures ninety-four angulas from the soles of the feet to the top of the head. There is a special honor given to those whose arms, when withdrawn, reach their knees—a form revered by gods and reflected among cows, elephants, buffaloes, and even immobile beings. By these measures, one can understand the increase and decrease of forms through the ages. For example, the animal known as ākakuda stands seventy-six angulas tall, while elephants reach a height of one hundred and eight angulas, and sometimes even a thousand and forty-two angulas. Trees, too, reach up to one hundred and fifty angulas. The arrangement of the human body is as described, and this is mirrored among the gods, whose forms are said to be endowed with exceptional intelligence—unlike humans, who lack such excellence. Among all beings—animals, birds, and those that do not move—cows, goats, horses, elephants, birds, and deer hold special significance. These creatures are used in rituals and are fit for sacrifice, their forms enjoyed by the gods in due order. According to their natural forms and proper measures, these stationary and moving beings attain happiness through their delightful enjoyments. The sage then turns to the virtuous among beings, and especially to the Brāhmaṇas and the revealed words, which are considered the animal forms among the gods, united within Brahman, as the righteous declare. In both ordinary and special duties, Brāhmaṇas, Kṣatriyas, and Vaiśyas engage in actions prescribed by the Vedas and Smṛti. For those who are established in the orders and stages of life, whose aim is happiness and heaven, the Vedic and Smṛti-based dharma is called the dharma of knowledge. One who pursues the means of the divine is virtuous. The celibate student devoted to his teacher is virtuous, and so too is the householder, because of his purpose and means. The Vaikhānasa, practicing austerity in the forest, is remembered as virtuous, and the striving ascetic is called virtuous for his pursuit of yoga. Dharma, the sage explains, is the course of righteousness; it is the very nature of action. The Lord himself declares both skillful and unskillful actions as dharma and adharma. Gods, ancestors, seers, and humans discern, often through silence, what is dharma and what is not. The root 'dhṛ' in 'dharma' means to support and to be great; therefore, dharma is that which supports or is great. On the righteous path, teachers instruct what leads to desired results; the unrighteous path, which brings undesired outcomes, is never taught. True teachers are elders, without greed, self-controlled, free of deceit, properly disciplined, and gentle. The dharma established by those who know righteousness, based on Vedic and traditional authority, is practiced by the twice-born; its mark is the connection with wife, sacred fire, and ritual worship. The tradition based on memory is the conduct of caste and stage of life, accompanied by restraints and observances. The ancient sages, having known the Vedas, declared this Vedic tradition. The hymns, formulas, and chants are the very limbs of Brahman, the revelation itself, and recalling the past age, Manu spoke thus. Therefore, the tradition based on memory is the righteous path, divided according to caste and stage of life. Thus, dharma is twofold, and the conduct of the learned is so called. From the root 'śiṣ', meaning 'to instruct', comes the term 'śiṣṭa'—the learned and righteous, who remain in every age. Manu and the seven sages, who preserve the world, remain for the sake of righteousness; these are the learned. By their efforts, when dharma declines, it is restored in every age. The threefold Veda, agriculture, and law enforcement are pursued according to the desires of people in their respective castes and stages of life. Because the learned practice it, and because, when Manu passes, it is established by successive generations, the conduct of the learned is eternal. Giving, truthfulness, austerity, service, learning, worship, self-restraint—these eight are the marks of the conduct of the learned. Since Manu and the seven sages practice this in all ages, the conduct of the learned is ever remembered.