A good cause is often injured more by ill-timed efforts of its friends than by the arguments of its enemies. Persuasion, perseverance and patience are the best advocates on questions depending on the will of others.
Source: Thomas Jefferson to James Heaton, 1826.
-- Thomas Jefferson, (Apr 13 1743-1826), US president, educator, architect, inventor; He wrote the Declaration of Independence, was the 3rd President, and founded U. of Virginia, 1819.