Date: c. 1508?

"The mind of the painter should be like a mirror which always takes the colour of the thing that it reflects and which is filled by as many images as there are things placed before it."

— Leonardo di ser Piero da Vinci (1452-1519)

Date: 1730

"Now, if such a complex being were in nature, how would that spiritual Soul act in that Body, that in its first Union with it (excepting some universal Principles) is a rasa Tabula, as a white Paper, without the Notices of Things written in it?"

— Fénelon, François de Salignac de la Mothe (1651-1715); Anonymous

Date: 1760

"A man this emptied and vacuated of self-conceit, these lines of natural pride, being blotted out, the soul is as a Tabula rasa, an unwritten table, to receive any impression of the law of God, that he pleases to put on it; and then his words are all plain to him that understandeth, and right to ...

— Binning, Hugh (1627-1653)

Date: w. btw. April and August, 1844

"Logic -- mind's coin of the realm, the speculative or mental value of man and nature -- its essence which has grown totally indifferent to all real determinateness, and hence unreal -- is alienated thinking, and therefore thinking which abstracts from nature and from real man: abstract thinking."

— Marx, Karl (1818-1883)

Date: w. before 1641, 1883

"[H]is face was the frontispice of his mind, hee knew not how to dissemble a thought."

— Smyth, John (1567-1640)