“Reason perceives the general and proceeds by logical operations, whereas Intellect perceives the principial − the metaphysical − and proceeds by intuition.”

Subjectively speaking, the essence of philosophy is certitude; for the moderns, on the contrary, the essence of philosophy is doubt: the philosopher is supposed to reason without any premise (voraussetzungsloses Denken), as if this condition were not itself a preconceived idea; this is the classical contradiction of all relativism. Everything is doubted except for doubt. The solution to the problem of knowledge − if there is a problem − could not possibly be this intellectual suicide that is the promotion of doubt; on the contrary, it lies in having recourse to a source of certitude that transcends the mental mechanism, and this source − the only one there is − is the pure Intellect, or Intelligence as such.
[2005, The Transfiguration of Man, World Wisdom, 3, 978-0-94153219-8]
Miscellaneous, Philosophy

Original: (la) Auctoritas siquidem ex vera ratione processit, ratio vero nequaquam ex auctoritate. Omnis enim auctoritas, quae vera ratione non approbatur, infirma videtur esse. Vera autem ratio, quum virtutibus suis rata atque immutabilis munitur, nullius auctoritatis adstipulatione roborari indigent.

De Divisione Naturae, Bk. 1, ch. 69; translation by I. P. Sheldon-Williams, cited from Peter Dronke (ed.) A History of Twelfth-Century Western Philosophy (Cambridge: CUP, 1988) p. 2.

Z. Hanfi, trans., in The Fiery Brook (1972), p. 68
Towards a Critique of Hegel’s Philosophy (1839)

Introduction, Section IV, Of Theory, p. 7.
Institutes of Moral Philosophy (1769)

Source: Treatise Concerning Eternal and Immutable Morality (1731), Ch. 1, sct. 3

Introduction to Logic: and to the Methodology of Deductive Sciences. (1941/2013) Tr. Olaf Helmer, pp. 108-110.

The Second Coming of Christ: The Resurrection of the Christ Within You, (2004) by Yogananda

Kant's Inaugural Dissertation (1770), Section V On The Method Respecting The Sensuous And The Intellectual In Metaphysics

B 730; Variant translation: All our knowledge begins with the senses, proceeds then to the understanding, and ends with reason. There is nothing higher than reason.
Variant: All human knowledge begins with intuitions, proceeds from thence to concepts, and ends with ideas.
Source: Critique of Pure Reason (1781; 1787)