“Compulsion in religion is distinguished peculiarly from compulsion in every other thing. I may grow rich by art I am compelled to follow, I may recover health by medicines I am compelled to take against my own judgment, but I cannot be saved by a worship I disbelieve & abhor.”

“Man has no nature”
History as a System (1962)
Context: Be it well understood, I am free by compulsion, whether I wish to be or not. Freedom is not an activity pursued by an entity that, apart from and previous to such pursuit, is already possessed of a fixed being. To be free means to be lacking in constitutive identity, not to have subscribed to a determined being, to be able to be other than what one was, to be unable to install oneself once and for all in any given being. The only attribute of the fixed, stable being in the free being is this constitutive instability.

1930s, Mein Weltbild (My World-view) (1931)
Context: In human freedom in the philosophical sense I am definitely a disbeliever. Everybody acts not only under external compulsion but also in accordance with inner necessity. Schopenhauer's saying, that "a man can do as he will, but not will as he will," has been an inspiration to me since my youth up, and a continual consolation and unfailing well-spring of patience in the face of the hardships of life, my own and others'. This feeling mercifully mitigates the sense of responsibility which so easily becomes paralyzing, and it prevents us from taking ourselves and other people too seriously; it conduces to a view of life in which humor, above all, has its due place.

My Inventions (1919)

Davenport's response to a call for adjourning the Connecticut State Council because of fears that the deep darkness might be a sign that the Last Judgment was approaching, as quoted by Timothy Dwight, Connecticut Historical Collections 2d ed (1836) compiled by John Warner Barber, p. 403.

http://www.girlscantwhat.com/2007/10/15/i-am-my-own-experiment/
Variant: I am my own experiment. I am my own work of art.

Preface
De revolutionibus orbium coelestium (1543)
Context: For I am not so enamored of my own opinions that I disregard what others may think of them. I am aware that a philosopher's ideas are not subject to the judgment of ordinary persons, because it is his endeavor to seek the truth in all things, to the extent permitted to human reason by God. Yet I hold that completely erroneous views should be shunned. Those who know that the consensus of many centuries has sanctioned the conception that the earth remains at rest in the middle of the heaven as its center would, I reflected, regard it as an insane pronouncement if I made the opposite assertion that the earth moves.

Source: Abba's Child: The Cry of the Heart for Intimate Belonging

Bk. 1, prologue, line 356.
Eneados