Date: 1775

"I am rather inclined to think that, though the subject is beyond our comprehension at present, that man does not consist of two principles, so essentially different from one another as matter and spirit, which are always described as having not one common property, by means of which they can aff...

— Priestley, Joseph (1733-1804)

Date: 1775

"That vibrations corresponding to all the varieties of sensations and ideas that ever take place in any human, mind may take place in the same brain at the same time, can create no difficulty to any person who considers the capacity of the air itself to transmit different vibrations, witho...

— Priestley, Joseph (1733-1804)

Date: 1775

"That vibrations [in the air above London] which are nearly isochronous affect and modify one another, so as to become perfectly so, sufficiently corresponds to the phænomena of ideas, and therefore makes no objection to this doctrine."

— Priestley, Joseph (1733-1804)

Date: 1775

"For this reason a bow of any kind, that has been bent, does not restore itself to the same form that it had before, but leans a little to the other, in consequence of the spheres of attraction and repulsion belonging to the several particles having been altered by the change of their situation. ...

— Priestley, Joseph (1733-1804)

Date: 1775

"Also those phenomena in nature which depend upon gravity, electricity, &c. are no less various and complex; and the more we know of nature, the more particular facts, and particular laws, we are able to reduce to simple and general laws: insomuch that now it does not appear impossible, but that,...

— Priestley, Joseph (1733-1804)

Date: 1775

"To account for the idea of time, it appears to me to be sufficient to attend to a few well known facts, viz. that impressions made by external objects remain a certain space of time in the mind, that this time is different according to the strength, and other circumstances of the impression, and...

— Priestley, Joseph (1733-1804)

Date: 1790, 1794, 1795, 1818, 1827

"Energy is the only life and is from the Body and Reason is the bound or outward circumference of Energy."

— Blake, William (1757-1827)

Date: 1790, 1794, 1795, 1818, 1827

"For man has closed himself up, till he sees all things thro' narrow chinks of his cavern."

— Blake, William (1757-1827)

Date: 1790, 1794

"You, my dear friend, who have felt the tender attachments of love and friendship, and the painful anxieties which absence occasions, even amidst scenes of variety and pleasure; who understand the value at which tidings from those we love is computed in the arithmetic of the heart."

— Williams, Helen Maria (1759-1827)

Date: December 1790

"From the many just sentiments interspersed through the letter before me, and from the whole tendency of it, I should believe you to be a good, though a vain man, if some circumstances in your conduct did not render the inflexibility of your integrity doubtful; and for this vanity a knowledge of ...

— Wollstonecraft, Mary (1759-1797)