We can only reason from what is; we can reason on actualities, but not on possibilities
Source: In Poor Man's College Quotations Collection, ed. Sidney Madwed, AAPEX software, 1994.
-- Henry St John Bolingbroke, (Sep 16 1678-1751), English statesman, politician; He was a prominent Tory politician and a major political propagandist in opposition to the Whig Party.