“I conceive that the founders of the mysteries had a real meaning and were not mere triflers when they intimated in a figure long ago that he who passes unsanctified and uninitiated into the world below will live in a slough, but that he who arrives there after initiation and purification will dwell with the gods. For "many," as they say in the mysteries, "are the thyrsus bearers, but few are the mystics,"—meaning, as I interpret the words, the true philosophers.”
Plato, Phaedo
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Socrates 168
classical Greek Athenian philosopher -470–-399 BCRelated quotes

After visiting such Nazi strongholds as were found in Berchtesgaden and Kehlsteinhaus; Personal diary (1 August 1945); published in Prelude to Leadership (1995)
Pre-1960
“He who meditates into the mysteries of the Holy Quran is sagacious in true sense.”
Source: The Sayings and Teachings of the Great Mystics of Islam, p. 43

The Tragic Sense of Life (1913), II : The Starting-Point