“Since Religion is calculated for reasonable Creatures, 'tis Conviction and not Authority that should bear Weight with them.”
Christianity not Mysterious (1696), Preface
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John Toland 12
Irish philosopher 1670–1722Related quotes

Thoughts Upon Slavery (1774)
Context: I deny that villany is ever necessary. It is impossible that it should ever be necessary for any reasonable creature to violate all the laws of justice, mercy, and truth. No circumstances can make it necessary for a man to burst in sunder all the ties of humanity. It can never be necessary for a rational being to sink himself below a brute. A man can be under no necessity of degrading himself into a wolf. The absurdity of the supposition is so glaring, that one would wonder any one can help seeing it.

Part I, p. 28.
The Autobiography (1818)
Context: I believe I have omitted mentioning that in my first Voyage from Boston, being becalm'd off Block Island, our People set about catching Cod and haul'd up a great many. Hitherto I had stuck to my Resolution of not eating animal Food and on this Occasion, I consider'd with my Master Tryon, the taking every Fish as a kind of unprovok'd Murder, since none of them had or ever could do us any Injury that might justify the Slaughter. All this seem'd very reasonable. But I had formerly been a great Lover of Fish, and when this came hot out of the Frying Pan, it smelt admirably well. I balanc'd some time between Principle and Inclination: till I recollected, that when the Fish were opened, I saw smaller Fish taken out of their Stomachs: Then, thought I, if you eat one another, I don't see why we mayn't eat you. So I din'd upon Cod very heartily and continu'd to eat with other People, returning only now and then occasionally to a vegetable Diet. So convenient a thing it is to be a reasonable creature, since it enables one to find or make a reason for everything one has a mind to do.

Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), The Right Relation of Reason to Religion, p.224-5

Darwin’s Black Box: The Biochemical Challenge to Evolution (1996)
The Sacred Theory of the Earth, quoted in Stephen Jay Gould, Time's Arrow, Time's Cycle (1987), p. 32; ellipsis Gould's.

Book I http://www.staff.science.uu.nl/~gent0113/huygens/huygens_ct_en.htm, p. 27
Cosmotheoros (1695; publ. 1698)