“3779. One may say too much, even upon the best Subject.”

Speech at Croatian Parliament http://www.jutarnji.hr/nase-psovke-od-konja-do-alpskog-cetnika-/881363/ (1998).
In parliament

Forbes v. Cochrane and Cockburn (1824), 2 St. Tr. (N. S.) 159.

Reflections on Various Subjects (1665–1678), V. On Conversation

Autobiography (1936; 1949; 1958)
Context: Organised religion allying itself to theology and often more concerned with its vested interests than with the things of the spirit encourages a temper which is the very opposite of science. It produces narrowness and intolerance, credulity and superstition, emotionalism and irrationalism. It tends to close and limit the mind of man and to produce a temper of a dependent, unfree person.
Even if God did not exist, it would be necessary to invent Him, so Voltaire, said … perhaps that is true, and indeed the mind of man has always been trying to fashion some such mental image or conception which grew with the mind's growth. But there is something also in the reverse proposition: even if God exist, it may be desirable not to look up to Him or to rely upon Him. Too much dependence on supernatural forces may lead, and has often led, to loss of self-reliance in man, and to a blunting of his capacity and creative ability. And yet some faith seems necessary in things of the spirit which are beyond the scope of our physical world, some reliance on moral, spiritual, and idealistic conceptions, or else we have no anchorage, no objectives or purpose in life. Whether we believe in God or not, it is impossible not to believe in something, whether we call it a creative life-giving force, or vital energy inherent in matter which gives it its capacity for self-movement and change and growth, or by some other name, something that is as real, though elusive, as life is real when contrasted with death. <!-- p. 524 (1946)

Hagakure (c. 1716)

"The Brooklyn Divines." Brooklyn Union (Brooklyn, NY), 1883.

Letter to Lafayette (1 February 1830), published in Letters and Other Writings of James Madison (1867), Vol. IV, p. 60 https://books.google.com/books?id=ugpFAQAAMAAJ&pg=PA60#v=twopage&q&f=false<!-- also quoted in The Last of the Fathers: James Madison and the Republican Legacy (1989), by Drew R. McCoy, Cambridge University Press, p. 252 -->
1830s
Context: Your anticipations with regard to the slavery among us were the natural offspring of your just principles and laudable sympathies; but I am sorry to say that the occasion which led to them proved to be little fitted for the slightest interposition on that subject. A sensibility, morbid in the highest degree, was never more awakened among those who have the largest stake in that species of interest, and the most violent against any governmental movement in relation to it. The excitability at the moment, happened, also, to be not a little augmented by party questions between the South and the North, and the efforts used to make the circumstance common to the former a sympathetic bond of co-operation. I scarcely express myself too strongly in saying, that any allusion in the Convention to the subject you have so much at heart would have been a spark to a mass of gunpowder. It is certain, nevertheless, that time, the “great Innovator,” is not idle in its salutary preparations. The Colonization Society are becoming more and more one of its agents. Outlets for the freed blacks are alone wanted for a rapid erasure of the blot from our Republican character.

Living History (June 9, 2003)
Senate years (2001 – January 19, 2007)

Source: On Human Communication (1957), What Is It That We Communicate?, p. 10-11