“The right hon. Member for Heseltine—[Laughter. ]—well, that is what he is; he sticks to that principle more than he does to Henley.”

Hansard http://www.parliament.the-stationery-office.co.uk/pa/cm199495/cmhansrd/1995-04-25/Orals-2.html, House of Commons 6th series, vol. 258, cols. 655-6.
Prime Minister's Question Time, 25 April 1995.
1990s

Source: Quintana of Charyn

Speech in the House of Commons http://hansard.millbanksystems.com/commons/1979/mar/15/tuc (15 March 1979).

Preface
Lacon (1820)

Pupils at Sais (1799)
Context: If on the one hand the Scholastics and Alchemists seem to be utterly at variance, and the Eclectics on the other hand quite at one, yet, strictly examined, it is altogether the reverse. The former, in essentials, are indirectly of one opinion; namely, as regards the non-dependence, and infinite character of Meditation, they both set out from the Absolute: whilst the Eclectic and limited sort are essentially at variance; and agree only in what is deduced. The former are infinite but uniform, the latter bounded but multiform; the former have genius, the latter talent; those have Ideas, these have knacks (Handgriffe); those are heads without hands, these are hands without heads. The third stage is for the Artist, who can be at once implement and genius. He finds that that primitive Separation in the absolute Philosophical Activities' (between the Scholastic, and the "rude, intuitive Poet") 'is a deeper-lying Separation in his own Nature; which Separation indicates, by its existence as such, the possibility of being adjusted, of being joined: he finds that, heterogeneous as these Activities are, there is yet a faculty in him of passing from the one to the other, of changing his polarity at will. He discovers in them, therefore, necessary members of his spirit; he observes that both must be united in some common Principle. He infers that Eclecticism is nothing but the imperfect defective employment of this principle.

Article on Philosophy, Vol. 25, p. 667, as quoted in Main Currents of Western Thought : Readings in Western European Intellectual History from the Middle Ages to the Present (1978) by Franklin Le Van Baumer
Variant translation: Reason is to the philosopher what grace is to the Christian. Grace moves the Christian to act, reason moves the philosopher. Other men walk in darkness; the philosopher, who has the same passions, acts only after reflection; he walks through the night, but it is preceded by a torch. The philosopher forms his principles on an infinity of particular observations. … He does not confuse truth with plausibility; he takes for truth what is true, for forgery what is false, for doubtful what is doubtful, and probable what is probable. … The philosophical spirit is thus a spirit of observation and accuracy.
L'Encyclopédie (1751-1766)
Context: Reason is to the philosopher what grace is to the Christian.
Grace causes the Christian to act, reason the philosopher. Other men are carried away by their passions, their actions not being preceded by reflection: these are the men who walk in darkness. On the other hand, the philosopher, even in his passions, acts only after reflection; he walks in the dark, but by a torch.
The philosopher forms his principles from an infinity of particular observations. Most people adopt principles without thinking of the observations that have produced them, they believe the maxims exist, so to speak, by themselves. But the philosopher takes maxims from their source; he examines their origin; he knows their proper value, and he makes use of them only in so far as they suit him.
Truth is not for the philosopher a mistress who corrupts his imagination and whom he believes to be found everywhere; he contents himself with being able to unravel it where he can perceive it. He does not confound it with probability; he takes for true what is true, for false what is false, for doubtful what is doubtful, and probable what is only probable. He does more, and here you have a great perfection of the philosopher: when he has no reason by which to judge, he knows how to live in suspension of judgment...
The philosophical spirit is, then, a spirit of observation and exactness, which relates everything to true principles...

Source Book in Ancient Philosophy (1907), The Golden Sayings of Democritus

General Peyton C. March, as quoted in Crew Resource Management for the Fire Service (2004) by Randy Okray and Thomas Lubnau II, p. 25.
Misattributed