“He who knows the All but fails to know himself lacks everything.”
67
Gospel of Thomas (c. 50? — c. 140?)
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Thomas the Apostle 27
Apostle of Jesus ChristRelated quotes

“He, who does not know the entries, the exits will fail him.”
[Baqir Sharīf al-Qurashi, The life of Imam Muhammad al-Jawad, Wonderful Maxims and Arts, 2005]

Conversation with Jean Martet (1 June 1928), Ch. 30
Clemenceau, The Events of His Life (1930)

The Sacred Pipe (1953)
Context: It is good to have a reminder of death before us, for it helps us to understand the impermanence of life on this earth, and this understanding may aid us in preparing for our own death. He who is well prepared is he who knows that he is nothing compared with Wakan-Tanka who is everything; then he knows that world which is real.

“He who knows how to suffer everything can dare everything.”
Qui sait tout souffrir peut tout oser.
Variant: He who knows how to suffer everything can dare everything.
Source: Reflections and Maxims (1746), p. 176.

As quoted in "Husayn ibn Mansur al-Hallaj" at Sidi Muhammad Press http://www.sufimaster.org/teachings/husayn.htm
Context: In the Name of Allah the Merciful, the Compassionate, Who manifests Himself through everything, the revelation of a clear knowing to whomsoever He wishes, peace be upon you, my son. This praise belongs to Allah Who manifests Himself on the head of a pin to whom He wishes, so that one testifies that He is not, and another testifies that there is none other than He. But the witnessing in the denying of Him is not rejected, and the witnessing in the affirming of Him is not praised.
“Most people who fail in their dream fail not from lack of ability but from lack of commitment.”
Source: See You at the Top

in p. 173.
Sources, The Yoga Darsana Of Patanjali With The Sankhya Pravacana Commentary Of Vyasa

Source: The Subtle Art of Not Giving a F*ck (2016), Chapter 6, “You’re Wrong About Everything (But So Am I)” (p. 135)