Source: A History of the Jews in England (3rd ed. 1964), p. 126
“Contemporary with Vitellio and Peccam was… Roger Bacon, a man of almost universal genius, and who wrote on almost every branch of science. He frequently quotes Alhazen on the subject of optics, and seems to have carefully studied his writings, as well as those of other Arabians, which were the fountains of natural knowledge in those days, and which had been introduced into Europe by means of the Moors in Spain. Notwithstanding the pains this great man took with the subject of opticks, it does not appear that, with respect to theory, he made any considerable advance upon what Alhazen had done before him.”
Period I To the Revival of Letters in Erope
The History and Present State of Discoveries Relating to Vision, Light, and Colours (1772)
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Joseph Priestley 47
English theologian, chemist, educator, and political theori… 1733–1804Related quotes

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Context: If the young aspirant is not rich enough for Parliament, and is deterred by the basilisks or otherwise from entering on Law or Church, and cannot altogether reduce his human intellect to the beaverish condition, or satisfy himself with the prospect of making money,—what becomes of him in such case, which is naturally the case of very many, and ever of more? In such case there remains but one outlet for him, and notably enough that too is a talking one: the outlet of Literature, of trying to write Books. Since, owing to preliminary basilisks, want of cash, or superiority to cash, he cannot mount aloft by eloquent talking, let him try it by dexterous eloquent writing. Here happily, having three fingers, and capital to buy a quire of paper, he can try it to all lengths and in spite of all mortals: in this career there is happily no public impediment that can turn him back; nothing but private starvation—which is itself a finis or kind of goal—can pretend to hinder a British man from prosecuting Literature to the very utmost, and wringing the final secret from her: "A talent is in thee; No talent is in thee." To the British subject who fancies genius may be lodged in him, this liberty remains; and truly it is, if well computed, almost the only one he has.

Preface p. viii
A History of Greek Mathematics (1921) Vol. 1. From Thales to Euclid

[Parameswaran, Uma, C.V. Raman: A Biography, http://books.google.com/books?id=RbgXRdnHkiAC, 2011, Penguin Books India, 978-0-14-306689-7] page=xiv