“The idealist seeks the security of a static harmony, and therefore considers every tension evil. Unitary man recognizes tension as an essential feature of the formative process operating in man. Man creates in resolving tensions, but never brings them to an end. The contrasts of past, present and future forms provide an inexhaustible source of tension.”

1960s, Letter from a Birmingham Jail (1963)
Context: Actually, we who engage in nonviolent direct action are not the creators of tension. We merely bring to the surface the hidden tension that is already alive. We bring it out in the open, where it can be seen and dealt with. Like a boil that can never be cured so long as it is covered up but must be opened with all its ugliness to the natural medicines of air and light, injustice must be exposed, with all the tension its exposure creates, to the light of human conscience and the air of national opinion before it can be cured.

Time Magazine (20 October 1952).

Source: The Next Development in Man (1948), p. 255

Source: To Live Forever (1956), Chapter XVI, section 3

"Classical and Baroque Sex in Everyday Life" (1979), Beginning To See the Light: Pieces of a Decade (1981)
Context: There are two kinds of sex, classical and baroque. Classical sex is romantic, profound, serious, emotional, moral, mysterious, spontaneous, abandoned, focused on a particular person, and stereotypically feminine. Baroque sex is pop, playful, funny, experimental, conscious, deliberate, amoral, anonymous, focused on sensation for sensation's sake, and stereotypically masculine. The classical mentality taken to an extreme is sentimental and finally puritanical; the baroque mentality taken to an extreme is pornographic and finally obscene. Ideally, a sexual relation ought to create a satisfying tension between the two modes (a baroque idea, particularly if the tension is ironic) or else blend them so well that the distinction disappears (a classical aspiration).

1960s, Letter from a Birmingham Jail (1963)
Context: You may well ask: "Why direct action? Why sit ins, marches and so forth? Isn't negotiation a better path?" You are quite right in calling for negotiation. Indeed, this is the very purpose of direct action. Nonviolent direct action seeks to create such a crisis and foster such a tension that a community which has constantly refused to negotiate is forced to confront the issue. It seeks so to dramatize the issue that it can no longer be ignored. My citing the creation of tension as part of the work of the nonviolent resister may sound rather shocking. But I must confess that I am not afraid of the word "tension." I have earnestly opposed violent tension, but there is a type of constructive, nonviolent tension which is necessary for growth. Just as Socrates felt that it was necessary to create a tension in the mind so that individuals could rise from the bondage of myths and half truths to the unfettered realm of creative analysis and objective appraisal, so must we see the need for nonviolent gadflies to create the kind of tension in society that will help men rise from the dark depths of prejudice and racism to the majestic heights of understanding and brotherhood. The purpose of our direct action program is to create a situation so crisis packed that it will inevitably open the door to negotiation.

1940 - 1948, Intimate Banalities' (1941)

(1997)

Source: The Next Development in Man (1948), p. 193-194