"In all times and among many peoples there have ... been men, who were aware of the reality of "visions" and intuitions, of inspirations and sudden thoughts and ideas, men who understood that besides the purely sensuous impression a thought, a flash of intuition, in short know- ledge, may come to the human mind, as it were spon- taneously, at least without any conscious activity of the organ of sensory perception and which leaves an impres- sion of great reality; men who know that the "doors of the mind may be opened" (RV. 9,10,6). Often also the source of this knowledge is divine. The god Agni, the guest among men and his guru, is explicitly called a dhiirii rtasya (RV. 1,67,7), i.e. "stream or 'fountain' of transcendental truth", the inventor of brilliant speech (2,9 ,4 sukrasya vacaso manotii) , who brings the light of the vibrations of inspiration (3 ,10 ,5 vipiim jyotimsi bibhrat). He opens the thoughts of the poets (4,11,2), his are the origins of the specialgifts of the seers (4,11,3), and in 6,9 we find an elaborate description of the relation between the god - who is the light of the world as well as the internal light illumining poets and sages - and the poet who by devout concentration upon the god experiences the inspiration as an ecstasy."