Who said the quotation know thy self?

Answer 1

to know thy self means to experience thy self as eternal spirit as discovered when in the practice of meditation (medicine ) .the true purpose of life is to overcome it and attain liberation (spiritual liberation) also known as spiritual enlightenment,nirvana,satori,kingdom of God, samadhi, heaven, and many other name. all great teachers have tried to teach this including,Jesus, the Buddha, Lao Tzu, Mohammed, krishnamurti, Yogananda, Ramana Marharshi , Krishnamurti, Nostradamus and others . the complete research report can be found at www.greatpath.org or www.guardiantext.org to know thy self means to experience thy self as eternal spirit as discovered when in the practice of meditation (medicine ) .the true purpose of life is to overcome it and attain liberation (spiritual liberation) also known as spiritual enlightenment,nirvana,satori,kingdom of God, samadhi, heaven, and many other name. all great teachers have tried to teach this including,Jesus, the Buddha, Lao Tzu, Mohammed, krishnamurti, Yogananda, Ramana Marharshi , Krishnamurti, Nostradamus and others . the complete research report can be found at www.greatpath.org or www.guardiantext.org

Answer 2

The quotation was inscribed on the temple of Pythian Apollo at Delphi, in modern-day Greece. Originally it was γνωθι σεαυτόν - "GNOTHI SEAUTON" - "Know yourself", along with its sister-inscription μηδέν άγαν - "MEDEN AGAN" - "nothing in excess".