Date: 1690, 1694, 1695, 1700, 1706

"For, though he that contemplates the Operations of his Mind, cannot but have plain and clear Ideas of them; yet unless he turn his Thoughts that way, and considers them attentively, he will no more have clear and distinct Ideas of all the Operations of his Mind, and all that may be observed ther...

— Locke, John (1632-1704)

Date: From Tuesday May 30. to Thursday June 1. 1710

"In a Word, the Beauties and the Charms of Nature and of Art court all my Faculties, refresh the Fibres of the Brain, and smooth every Avenue of Thought. What pleasing Meditations, what agreeable Wanderings of the Mind, and what delicious Slumbers, have I enjoyed here?"

— Steele, Sir Richard (1672-1729)

Date: 1783

"Elegant speculations are sometimes found to float on the surface of the mind, while bad passions possess the interior regions of the heart."

— Blair, Hugh (1718-1800)