Known sourcecanonical
"When Bishop Berkeley said "there was no matter," And proved it,--'t was no matter what he said."
Lord Byron / Don Juan. Canto xi. Stanza 1.
Bartlett's Familiar Quotations, 9th ed. (Little, Brown, 1905), public domain
Bartlett's Familiar Quotations, 9th ed. (Little, Brown, 1905), public domain