“It was long ere the distinct nature and legitimate objects of geology were fully recognized, and it was at first confounded with many other branches of inquiry”

Quote from 'The History of Landscape Painting,' fourth lecture, Royal Institution (16 June 1836), from John Constable's Discourses, ed. R.B. Beckett, (Ipswich, Suffolk Records Society, 1970), p. 69.
1830s, his lectures History of Landscape Painting (1836)

Chpt.1, p. 4
Principles of Geology (1832), Vol. 1
Context: It was long ere the distinct nature and legitimate objects of geology were fully recognized, and it was at first confounded with many other branches of inquiry, just as the limits of history, poetry, and mythology were ill-defined in the infancy of civilization. Werner appears to have regarded geology as little other than a subordinate department of mineralogy and Desmarest included it under the head of Physical Geography.... The first who endeavored to draw a clear line of demarcation between these distinct departments, was Hutton, who declared that geology was in no ways concerned with 'questions as to the origin of things.

Source: Food of the Gods: The Search for the Original Tree of Knowledge

Where is science going? The Universe in the light of modern physics. (1932)

Preface, 2nd edition (21 December 1847)
Jane Eyre (1847)
Context: p>Conventionality is not morality. Self-righteousness is not religion. To attack the first is not to assail the last. To pluck the mask from the face of the Pharisee, is not to lift an impious hand to the Crown of Thorns. These things and deeds are diametrically opposed: they are as distinct as is vice from virtue. Men too often confound them: they should not be confounded: appearance should not be mistaken for truth; narrow human doctrines, that only tend to elate and magnify a few, should not be substituted for the world-redeeming creed of Christ. There is — I repeat it — a difference; and it is a good, and not a bad action to mark broadly and clearly the line of separation between them.The world may not like to see these ideas dissevered, for it has been accustomed to blend them; finding it convenient to make external show pass for sterling worth — to let white-washed walls vouch for clean shrines. It may hate him who dares to scrutinise and expose — to rase the gilding, and show base metal under it — to penetrate the sepulchre, and reveal charnel relics: but hate as it will, it is indebted to him.</p

To the Republican Citizens of Washington County, Maryland (31 March 1809)
1800s, Post-Presidency (1809)

As quoted in Presidential Leadership : Rating the Best and the Worst in the White House (2004) edited by James Taranto and Leonard Leo.

A Preliminary Discourse on the Study of Natural Philosophy (1831)
Context: We must never forget that it is principles, not phenomena, — laws not insulated independent facts, — which are the objects of inquiry to the natural philosopher. As truth is single, and consistent with itself, a principle may be as completely and as plainly elucidated by the most familiar and simple fact, as by the most imposing and uncommon phenomenon. The colours which glitter on a soapbubble are the immediate consequence of a principle the most important, from the variety of phenomena it explains, and the most beautiful, from its simplicity and compendious neatness, in the whole science of optics. If the nature of periodical colours can be made intelligible by the contemplation of such a trivial object, from that moment it becomes a noble instrument in the eye of correct judgment; and to blow a large, regular, and durable soap-bubble may become the serious and praise-worthy endeavour of a sage, while children stand round and scoff, or children of a larger growth hold up their hands in astonishment at such waste of time and trouble. To the natural philosopher there is no natural object unimportant or trifling. From the least of nature's works he may learn the greatest lessons. The fall of an apple to the ground may raise his thoughts to the laws which govern the revolutions of the planets in their orbits; or the situation of a pebble may afford him evidence of the state of the globe he inhabits, myriads of ages ago, before his species became its denizens.
And this, is, in fact, one of the great sources of delight which the study of natural science imparts to its votaries. A mind which has once imbibed a taste for scientific inquiry, and has learnt the habit of applying its principles readily to the cases which occur, has within itself an inexhaustible source of pure and exciting contemplations. One would think that Shakspeare had such a mind in view when he describes a contemplative man as finding

Part 1, Act I, scene i.
The Conquest of Granada (1669-1670)
Context: I am as free as Nature first made man,
Ere the base laws of servitude began,
When wild in woods the noble savage ran.