“To resist him that is set in authority is evil.”

Sadism and Masochism : The Psychology of Hatred and Cruelty, Vol. 1 (1939), p. 46
Context: An intense, unyielding stubbornness hides beneath an apparent obedience (the patient brings a vast number of dreams; his associations become endless; he produces an inexhaustible number of recollections, which seem to him very important but are actually of little moment; or he goes off upon some byroad suggested by the analyst and leads the latter into a blind alley).
The child manifests the same reactions of defiance and obedience. The child, too, can hide his stubbornness behind an excessive docility (the parent's command: You must be industrious. Industry may become a mania so that the child neither goes out nor has time to sleep). Obedience is the giving up of the resistance; obstinacy the setting up of fresh resistances. This resistance is externally active. We have in recent years had sufficient opportunity to observe the law of resistance (the passive resistance). Activity and defiance show great differences. Defiance is the reaction against activity (aggression) of the environment. It may then manifest itself actively or passively and stands in the service of the defensive tendency of the ego. Every resistance reveals the ego (one's own) in conflict with another.

The Work of Iron, in Nature, Art, and Policy http://books.google.com/books?id=uYEM0Sd18DsC&q="you+may+either+win+your+peace+or+buy+it%22+%22win+it+by+resistance+to+evil%22+%22buy+it+by+compromise+with+evil"&pg=PA196#v=onepage Lecture at Tunbridge Wells (February 16, 1858).

Source: Mythology: Timeless Tales of Gods and Heroes

Prefatory Address, p. 23
Institutes of the Christian Religion (1536; 1559)

Non-Violent Resistance - Often misquoted as "You assist an evil system most effectively by obeying its orders and decrees. An evil system never deserves such allegiance."
Posthumous publications (1950s and later)
Context: You assist an unjust administration most effectively by obeying its orders and decrees. An evil administration never deserves such allegiance. Allegiance to it means partaking of the evil.
A good person will resist an evil system with his whole soul. Disobedience of the laws of an evil state is therefore a duty.

Source: Stride Toward Freedom: The Montgomery Story

Young India (29 January 1925) p. 41
1920s

In reference to the Christian precept that God "hates sin but loves the sinner". Part IV, Chapter 9, A Tussle with Power. pp. 230-231. Also quoted in The Essential Gandhi: An Anthology of His Writings on His Life, Work, and Ideas (2012), p. 83
1920s, An Autobiography (1927)
Context: "Hate the sin and not the sinner" is a precept which, though easy enough to understand, is rarely practiced, and that is why the poison of hatred spreads in the world... Man and his deed are two distinct things. It is quite proper to resist and attack a system, but to resist and attack its author is tantamount to resisting and attacking one-self. For we are all tarred with the same brush and are children of one and the same Creator, and as such the divine powers within us are infinite. To slight a single human being is to slight those divine powers, and thus to harm not only that being, but with him, the whole world.

Source: Discipleship (1937), Revenge, p. 142