“The issue of patents for new discoveries has given a spring to invention beyond my conception.”
-- Thomas Jefferson
(source)
“The Patent System added the fuel of interest to the fire of genius.”
-- Abraham Lincoln
(source)
“A country without a patent office and good patent laws is just a crab and can't travel anyway but sideways and backways.”
-- Mark Twain (Samuel Clemens)
as remarked by his fictional character, Sir Boss
in Connecticut Yankee at King Arthur's Court
(source)