Famous quotes containing the words optical and/or force:
“There is an optical illusion about every person we meet.”
—Ralph Waldo Emerson (1803–1882)
“‘Tis happy, therefore, that nature breaks the force of all sceptical arguments in time, and keeps them from having any considerable influence on the understanding. Were we to trust entirely to their self-destruction, that can never take place, ‘till they have first subverted all conviction, and have totally destroy’d human reason.”
—David Hume (1711–1776)
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