To yearn for a strong faith is not the proof of a strong faith, but rather the reverse. If a man have a strong faith he can indulge in the luxury of scepticism
 Friedrich Nietzsche, Twilight of the Idols (1889). copy citation

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Author Friedrich Nietzsche
Source Twilight of the Idols
Topic yearning scepticism
Date 1889
Language English
Reference
Note Translated by Anthony M. Ludovici
Weblink https://www.gutenberg.org/files/52263/52263-h/52263-h.htm

Context

“I have been reading the life of Thomas Carlyle, that unconscious and involuntary farce, that heroico-moral interpretation of dyspeptic moods.—Carlyle, a man of strong words and attitudes, a rhetorician [Pg 70] by necessity, who seems ever to be tormented by the desire of finding some kind of strong faith, and by his inability to do so (—in this respect a typical Romanticist!) . To yearn for a strong faith is not the proof of a strong faith, but rather the reverse. If a man have a strong faith he can indulge in the luxury of scepticism; he is strong enough, firm enough, well-knit enough for such a luxury. Carlyle stupefies something in himself by means of the fortissimo of his reverence for men of a strong faith, and his rage over those who are less foolish:” source