शुक्लकृष्णे गती ह्येते जगतः शाश्वते मते ।एकया यात्यनावृत्तिम् अन्ययावर्तते पुनः ॥
śuklakṛṣṇe gatī hyete jagataḥ śāśvate mateekayā yātyanāvṛttim anyayāvartate punaḥ
These are the bright and the dark paths (called the path of the gods and the path of the fathers in the Upanishads); by the one he departs who does not return, by the other he who returns again.
Gītā 8·26Whatever psycho-physical fact or else symbolism there may be behind this notion —it comes down from the age of the mystics who saw in every physical thing an effective symbol of the psychological and who traced everywhere an interaction and a sort of identity of the outward with the inward, light and knowledge, the fiery principle and the spiritual energy,—we need observe only the turn by which the Gita closes the passage:…