By proving contraries, truth is made manifest.

Without contraries there is no progression.

— William Blake

The beginning, middle, and end of the birth, growth, and perfection of whatever we behold is from contraries, by contraries, and to contraries; and…

— Giordano Bruno

“Perhaps you yourself have notions about the Glass Bead Game, expecting more of it than it will give you, or perhaps the reverse. There…

— Hermann Hesse

Contraries are cured by contraries.

— Bill Vaughan

Our … reduceth to a single origin and relateth to a single , and maketh contraries to coincide so that there is one primal…

— Giordano Bruno

“Without Contraries is no Progression.”

— William Blake

…on some occasions, women, like dreams, go by contraries.

— Louisa May Alcott

Do we ever get what we really want? Do we ever achieve what our powers have ostensibly equipped us for? No: everything works by…

— Nikolai Gogol

“I've come to suspect that whenever any ability is difficult to learn and rarely performed well, it's probably because contraries are called for -…

— Peter Elbow

The passions often engender their contraries.

— Francois de La Rochefoucauld

Without contraries is no progression. Attraction and repulsion, reason and energy, love and hate, are necessary to human existence.

— William Blake

All concord's born of contraries.

— Ben Jonson

Thus we never see the true state of our condition till it is illustrated to us by its contraries, nor know how to value…

— Daniel Defoe

“As contraries are known by contraries, so is the delights of presence best known by the torments of absence.”

— Alcibiades

Wholeness is not achieved by cutting off a portion of one’s being, but by integration of the contraries.

— Anonymous