“My father always used to say, "Don't raise your voice. Improve your argument." Good sense does not always lie with the loudest shouters, nor can we say that a large, unruly crowd is always the best arbiter of what is right.”

Independent on Sunday obituary http://web.archive.org/web/20100522031727/http://www.independent.co.uk/news/media/bob-monkhouse-jokewriter-to-the-stars-and-the-longreigning-king-of-primetime-comedy-dies-at-75-578058.html

"Greek Fire"
Birds of America (1971)

Variant translation: We should not listen to those who like to affirm that the voice of the people is the voice of God, for the tumult of the masses is truly close to madness.
Works, Epistle 127 (to Charlemagne, AD 800)

Source: Tom Brown at Oxford (1861), Ch. 48

Source: Fool's Assassin

Source: The Gift of Fear: Survival Signals That Protect Us from Violence

Though "the Bard" is often reference to William Shakespeare, Fuller here probably uses the term in a generic sense, and in tribute to the poet-philosopher she considered in some ways her mentor, Ralph Waldo Emerson, who may have made such a statement, which she elsewhere quotes as "I have witnessed many a shipwreck, yet still beat noble hearts".
Woman in the Nineteenth Century (1845)
Context: I stand in the sunny noon of life. Objects no longer glitter in the dews of morning, neither are yet softened by the shadows of evening. Every spot is seen, every chasm revealed. Climbing the dusty hill, some fair effigies that once stood for symbols of human destiny have been broken; those I still have with me show defects in this broad light. Yet enough is left, even by experience, to point distinctly to the glories of that destiny; faint, but not to be mistaken streaks of the future day. I can say with the bard,
"Though many have suffered shipwreck, still beat noble hearts."
Always the soul says to us all, Cherish your best hopes as a faith, and abide by them in action. Such shall be the effectual fervent means to their fulfilment.

Athyra (1993)
Context: It isn't always easy to act on what's in your head instead of what's in your heart. And it isn't always right to. The whole trick to knowing what to do is deciding when to make yourself listen to your head, and when it's okay to just follow your feelings.

The Anatomy of Loneliness (1941)