“It is necessary to mark the greater from the lesser truth: namely the larger and more liberal idea of nature from the comparatively narrow and confined; namely that which addresses itself to the imagination from that which is solely addressed to the eye.”

Letter to Hugo Boxel (Oct. 1674) The Chief Works of Benedict de Spinoza (1891) Tr. R. H. M. Elwes, Vol. 2, Letter 58 (54).
Context: Beauty, my dear Sir, is not so much a quality of the object beheld, as an effect in him who beholds it. If our sight were longer or shorter, or if our constitution were different, what now appears beautiful to us would seem misshapen, and what we now think misshapen we should regard as beautiful. The most beautiful hand seen through the microscope will appear horrible. Some things are beautiful at a distance, but ugly near; thus things regarded in themselves, and in relation to God, are neither ugly nor beautiful. Therefore, he who says that God has created the world, so that it might be beautiful, is bound to adopt one of the two alternatives, either that God created the world for the sake of men's pleasure and eyesight, or else that He created men's pleasure and eyesight for the sake of the world. Now, whether we adopt the former or the latter of these views, how God could have furthered His object by the creation of ghosts, I cannot see. Perfection and imperfection are names which do not differ much from the names beauty and ugliness.<!--p. 382

Dargot HaSulam

A Declaration of the Independence of Cyberspace (1996)
Context: Governments of the Industrial World, you weary giants of flesh and steel, I come from Cyberspace, the new home of Mind. On behalf of the future, I ask you of the past to leave us alone. You are not welcome among us. You have no sovereignty where we gather.
We have no elected government, nor are we likely to have one, so I address you with no greater authority than that with which liberty itself always speaks. I declare the global social space we are building to be naturally independent of the tyrannies you seek to impose on us. You have no moral right to rule us nor do you possess any methods of enforcement we have true reason to fear.
Governments derive their just powers from the consent of the governed. You have neither solicited nor received ours. We did not invite you. You do not know us, nor do you know our world. Cyberspace does not lie within your borders.

Attributed in Naomi Klein's No Logo: No Space, No Choice, No Jobs https://books.google.com/books?id=Yq_WAUXqRAEC&pg=PA325 (2009), p.325, and in Mark Lynas' Seeds of Science: Why We Got It So Wrong On GMOs https://books.google.com/books?id=V10-DwAAQBAJ&pg=PA16 (2018), p. 16.
Attributed

Source: Lectures on the Will to Know (1970), pp. 4-5

Source: De architectura (The Ten Books On Architecture) (~ 15BC), Book I, Chapter VI, Sec. 10

La beauté qui parle aux yeux, reprit-elle, n’est que le prestige d’un moment; l’œuil du corps n'est pas toujours celui de l'âme.
Le Beau Laurence, ch. 1 (1870); Carroll Owen (trans.) Handsome Lawrence (Boston: James R. Osgood, 1871) p. 30

Source: The Characteristics of the Present Age (1806), p. 16

Misattributed
Original: (fr) Quand je suis le plus faible, je vous demande la liberté parce que tel est votre principe ; mais quand je suis le plus fort, je vous l’ôte, parce que tel est le mien

(fr) Also appears in the form "Quand les libéraux sont au pouvoir, nous leur demandons la liberté, parce que c’est leur principe, et, quand nous sommes au pouvoir, nous la leur refusons, parce que c’est le nôtre"

Misattributed to Veuillot in Dune (1965) by Frank Herbert: "When I am weaker than you, I ask you for freedom because that is according to your principles; when I am stronger than you, I take away your freedom because that is according to my principles."

According to Pierre Pierrard, this was attributed to Veuillot by Montalambert, and Veuillot protested he did not say it.