“I own it is a common saying, that every reverse of fortune teaches us how to behave on another occasion; but that is not true, as the circumstances which attend each event are different, and such as could not be foreseen.”

Sallust, Epistulae ad Caesarem senem, I.1.2

Source: Space and I, Chiaki Mukai http://www.globaleducationmagazine.com/space-and-i/

Anarchism: Its Philosophy and Ideal (1896)
Context: Far be it from us not to recognize the importance of the second factor, moral teaching — especially that which is unconsciously transmitted in society and results from the whole of the ideas and comments emitted by each of us on facts and events of every-day life. But this force can only act on society under one condition, that of not being crossed by a mass of contradictory immoral teachings resulting from the practice of institutions.
In that case its influence is nil or baneful. Take Christian morality: what other teaching could have had more hold on minds than that spoken in the name of a crucified God, and could have acted with all its mystical force, all its poetry of martyrdom, its grandeur in forgiving executioners? And yet the institution was more powerful than the religion: soon Christianity — a revolt against imperial Rome — was conquered by that same Rome; it accepted its maxims, customs, and language. The Christian church accepted the Roman law as its own, and as such — allied to the State — it became in history the most furious enemy of all semi-communist institutions, to which Christianity appealed at Its origin.

Source: Experimental researches in chemistry and physics

Source: Modern Cosmology (1971), p. 73

Source: Small Gods

Source: Revelation Space (2000), Chapter 10 (p. 220).