“It is because the spirit is inestimable that the lifeless body is so little valued.”

Fragments of an Analysis with Freud, ch.3 '22 January 1935' (1954) by Joseph Wortis; as quoted in Penguin Dictionary of Modern Quotations by Robert Andrews, Penguin Books, 2001.
Attributed from posthumous publications

Variant: I don't like people who have never fallen or stumbled. Their virtue is lifeless and it isn't of much value. Life hasn't revealed its beauty to them.
Source: Doctor Zhivago

Ashraf Ali Thānwī, Hayātul Muslimeen p.71

Gleanings from the Writings of Bahá'u'lláh
Context: Man is the supreme Talisman. Lack of a proper education hath, however, deprived him of that which he doth inherently possess. Through a word proceeding out of the mouth of God he was called into being; by one word more he was guided to recognize the Source of his education; by yet another word his station and destiny were safeguarded. The Great Being saith: Regard man as a mine rich in gems of inestimable value. Education can, alone, cause it to reveal its treasures, and enable mankind to benefit therefrom. <!-- CXXII, pp. 259-260

Original: (it) La generosità verso gli altri è un gesto di grandezza dell'anima. Un inestimabile valore umano e culturale.
Source: prevale.net

Michel Henry, Incarnation. Une philosophie de la chair, éd. du Seuil, 2000, p. 8
Books on Religion and Christianity, Incarnation: A philosophy of Flesh (2000)
Original: (fr) Car notre chair n'est rien d'autre que cela qui, s'éprouvant, se souffrant, se subissant et se supportant soi-même et ainsi jouissant de soi selon des impressions toujours renaissantes, se trouve, pour cette raison, susceptible de sentir le corps qui lui est extérieur, de le toucher aussi bien que d'être touché par lui. Cela donc dont le corps extérieur, le corps inerte de l'univers matériel, est par principe incapable.

Rules 2 Rule

Source: Doctor Zhivago

The lecture in Ashland, Oregon (8th of July 2005)