“It is understandable but implausible…to insist upon prominent media accounts about law-abiding citizens and quotidian virtue; this is a bit like the airline industry complaining that the press does not write stories about airplanes that land safely.”

Letter to William Thomson (2 January 1851), indicating his early work on what has since become known as Boolean logic.
1850s
Context: I am now about to set seriously to work upon preparing for the press an account of my theory of Logic and Probabilities which in its present state I look upon as the most valuable if not the only valuable contribution that I have made or am likely to make to Science and the thing by which I would desire if at all to be remembered hereafter.

Detail
The Note-Books of Samuel Butler (1912), Part IX - A Painter's Views on Painting
Context: One reason why it is as well not to give very much detail is that, no matter how much is given, the eye will always want more; it will know very well that it is not being paid in full. On the other hand, no matter how little one gives, the eye will generally compromise by wanting only a little more. In either case the eye will want more, so one may as well stop sooner or later. Sensible painting, like sensible law, sensible writing, or sensible anything else, consists as much in knowing what to omit as what to insist upon.

82, a slight variant of this was later published in Parables and Paradoxes (1946):
Why do we lament over the fall of man? We were not driven out of Paradise because of it, but because of the Tree of Life, that we might not eat of it.
"Paradise"
The Zürau Aphorisms (1917 - 1918)

Source: Are Prisons Obsolete? (2003), Chapter Five

On arming 4 year old children, as quoted in "Who is America" Episode 1 on Showtime
2000s

Hamid Dalwai, Muslim politics, p.106-8, quoted from Elst, Koenraad (2014). Decolonizing the Hindu mind: Ideological development of Hindu revivalism. New Delhi: Rupa. p. 364-6

Lies and the Lying Liars who Tell Them (2003)