"As a scripture, the Gītā embodies the supreme spiritual mystery and secret. It contains the essence of all the four Vedas. Its style is so simple and elegant that after a little study a man can easily follow the structure of its words; but the thought behind those words, is so deep and abstruse that even a lifelong constant study does not show one the end of it. Everyday the book exhibits a new facet to thought; hence the Gītā remains eternally new."
January 1, 1970
https://en.wikiquote.org/wiki/Bhagavad_Gita