“If you improve on the present, what comes later will also be better.”

Crime : Its Cause And Treatment (1922) Ch. 36 "Remedies"
Context: It is often said that the accused should be given an immediate trial; that this and subsequent proceedings should not be hindered by delay; that the uncertainties of punishment furnish the criminal with the hope of escape and therefore do not give the community the benefit of the terror that comes with the certainty of punishment that could prevent crime. I can see no basis in logic or experience for this suggestion. It is based on the theory that punishment is not only a deterrent to crime, but the main deterrent. It comes from the idea that the criminal is distinct from the rest of mankind, that vengeance should be sure and speedy and that then crime would be prevented. If this were true and the only consideration to prevent crime, then the old torture chamber and the ancient prison with all its hopelessness and horror should be restored. Logic, humanity and experience would protest against this. If there is to be any permanent improvement in man and any better social order, it must come mainly from the education and humanizing of man. I am quite certain that the more the question of crime and its treatment is studied the less faith men have in punishment.

Hyperion http://www.gutenberg.org/etext/5436, Bk. IV, Ch. 8 (1839).

The Deadliest U.S. Natural Hazard: Extreme Cold http://wattsupwiththat.com/2008/12/18/the-deadliest-us-natural-hazard-extreme-cold/ December 18, 2008.
Other

Epistulae Morales ad Lucilium (Moral Letters to Lucilius), Letter L: On Our Blindness and Its Cure

When asked whether he considered himself (and Carl) to be "intellectual", 2002
Definitions and objects

Scene IV, A Mountain; Sunrise. Compare: "The surest plan to make a man / Is to think him so", J. R. Lowell, Biglow Papers, II, ii. St. 9
Festus (1839)

Source: https://twitter.com/JamesClear/status/1054799443768287232