“I am the Truth.”
Ana al-Haqq
As quoted in From Primitives to Zen : A Thematic Sourcebook of the History of Religions (1967) by Mircea Eliade, p. 523; this is the primary assertion for which he was condemned as a heretic. "al-Haqq" ("The Truth") is one of the most holy names and attributes of Allah (God), and by this statement his persecutors asserted that Al Hallaj was claiming to be God.
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Mansur Al-Hallaj 11
Persian mystic, revolutionary writer and teacher of Sufism 858–922Related quotes

“I am nothing, truth is everything.”

“I am Phædrus, that is who I am, and they are going to destroy me for speaking the Truth.”
Source: Zen and the Art of Motorcycle Maintenance (1974), Ch. 31

“I am one whose name is Valiant-for-truth. I am a pilgrim, and am going to the Celestial City.”
Part II, Ch. XI : Mr. Valiant-For-Truth <!-- Sect. 4 -->
The Pilgrim's Progress (1678), Part II
Context: There stood a man with his sword drawn, and his face all over with blood. Then said Mr. Great-Heart, Who art thou? The man made answer, saying, I am one whose name is Valiant-for-truth. I am a pilgrim, and am going to the Celestial City.

Statement written weeks before his death in 1994, as quoted in "Unseen Bill Hicks Clip" in Esquire (3 February 2014) https://www.esquire.com/uk/culture/film/news/a5661/unseen-bill-hicks-clip/
“The truth remains. I was, and am, disgusted with myself.”
Source: By the Time You Read This, I'll Be Dead

“It is not I who am strong, it is reason, it is truth.”

Interview (c. 1945) in The Spiritual Teachings of Ramana Maharshi (1972), p. 75

“I am very fond of truth, but not at all of martyrdom.”
J'aime fort la vérité, mais je n'aime point du tout le martyre.
Letter to Jean le Rond d'Alembert (8 February 1776)
Citas