The Aryans at that time possessed a root ag, which meant going, marching, leading, running, forcing, pushing, chasing, and jumping, and gives generally an idea of quick movement, and as fire moved perpetually, our ancestors made use of this root ag, and called fire agni; this Sanscrit word—which amongst many others was the most popular—still survives in the Latin, as ignis, in Lithuania as ugni, in old Slavonic, as ogni; another Sanscrit name for fire is vah-ni, coming from the same root which we have in veho and vehemens, and it meant originally what moves about quickly.

I have collected a few of the characteristic traits attributed by the rishis to the deva Agni.

“How did he come—living—from pieces of dead wood? How is he produced from two stones? His mother does not nourish him, how does he grow so rapidly, and proceed at once to do his work? He whom nothing resists—like the heavenly thunderbolt—like a hurled weapon. Agni, in a moment, does violence to the trees of the forest; he prostrates them—all that moves—that which stands, trembles before him—making the herbs his food—he licks the garment of the earth—he nourishes himself. Turning about with his tongues of fire, Agni flares up in the forests. Roused by the wind, he moves about among the tall trees, and eats them with his sharpened teeth; he never tires; coming again and again; turning about on all sides; resounding with his sickle; laughing with his light.”

“Professor Tyndal asks quite rightly: ‘Is it in the human mind to imagine motion, without at the same time imagining something moved? Certainly not. The very conception of motion includes that of a moving body. What then is the thing moved in the case of sunlight? The undulatory theory replies that it is a substance of determinate mechanical properties, a body which may or may not be a form of ordinary matter, but to which, whether it is or not, we give the name of Ether.’ May not the ancient Aryas say with the same right (had he been wise enough to put the question), ‘Is it in the human mind to imagine motion without at the same time imagining some one that moves?’ Certainly not. The very conception of motion includes that of a mover, and, in the end, of a prime mover.”[83] And if, in the presence of fire, the early Aryas had asked who then is the mover, he would have been told (if any had been there wise enough to answer the question) that it is a subject of determinate properties, a person who may or may not be like ordinary persons, but to whom, whether he be or not, the name Agni has been given.

Thus the rishis spoke of Agni as of an agent, as well as of Indra, Vayu, Rudra, and the Maruts; but we must always remember that they knew nothing definite of these agents any more than we do when we speak of physical phenomena as elements, or forces of nature, or certain movements.

This striking deva, Agni, manifested at first in the lightning and in the spark, became as time went on, the most popular, and most desired of all the powers; the fire on the hearth rendered winter bearable, cooked herbs and roots, and transformed the devourer of raw flesh into the eater of roast meat; caused the smoke of sacrifices offered to the higher Powers to ascend up to heaven. What precautions were necessary to prevent the capricious and uncertain fire from becoming extinct at an inopportune moment, or in its rage from destroying men and things. Fire was for the rishis a being more and more inexplicable. Becoming increasingly impressed by his beneficence, they seek to call him by some new name which shall express more perfectly this later impression; the name deva—bright, shining—no longer satisfies them; they use words such as invincible, almighty; even these do not suffice them; at last they find the word Amartya—immortal.

“Immortal amongst Mortals.”

This expression may be understood in more ways than one; it is enough for me that the Hindoos made use of it. It is possible to recognise in it the first attempt to bridge over the gulf which human language and human thought had themselves created between the visible and the invisible, between the mortal and the immortal, between the finite and the infinite. For the right appreciation of our intellectual organisation, it is important to discover and distinguish the coarse threads that form the woof of our most abstract thoughts.

It must be noticed that the use of the word immortal in this passage does not imply that Agni is considered otherwise than as natural fire. The Rig-Veda does not seem to acknowledge the presence of supernatural beings; all the names given to the striking aspects of nature, even those used to designate the unknown powers in general, such as Asura—a living thing; Deva-asura—the living gods; Amartya—the immortal, still retain physical elements in the most ancient hymns.

Beings without definite attributes did not occur to the imagination of those who supplied these names, and believed in the existence of those which these names represented.