- For me, abstraction is real, probably more real than nature. I'll go further and say that abstraction is nearer my heart. I prefer to see with closed eyes.
- Joseph Albers, quoted in: Arts/Canada, Vol. 23 (1966), p. 46.
- An abstraction is one thing that represents several real things equally well.
- The UN is not just a product of do-gooders. It is harshly real. The day will come when men will see the UN and what it means clearly. Everything will be all right — you know when? When people, just people, stop thinking of the United Nations as a weird Picasso abstraction, and see it as a drawing they made themselves.
- Dag Hammarskjöld As quoted in The Times [London] (27 June 1955).
- The abstraction is often the most definite form for the intangible thing in myself that I can only clarify in paint.
- Georgia O'Keeffe Some Memories of Drawings (1976).
- Words are a medium that reduces reality to abstraction for transmission to our reason, and in their power to corrode reality inevitably lurks the danger that the words will be corroded too.
- Yukio Mishima. Sun and Steel (1968), p. 9.
- Denotation by means of sounds and markings is a remarkable abstraction. Three letters designate God for me; several lines a million things. How easy becomes the manipulation of the universe here, how evident the concentration of the intellectual world! Language is the dynamics of the spiritual realm. One word of command moves armies; the word Liberty entire nations.
- Novalis, Blüthenstaub (1798) Fragment No. 2.
- Everything abstract is ultimately part of the concrete. Everything inanimate finally serves the living. That is why every activity dealing in abstraction stands in ultimate service to a living whole.
- Edith Stein Essays on Woman (1996).
- I discovered the works of Euler and my perception of the nature of mathematics underwent a dramatic transformation. I was de-Bourbakized, stopped believing in sets, and was expelled from the Cantorian paradise. I still believe in abstraction, but now I know that one ends with abstraction, not starts with it. I learned that one has to adapt abstractions to reality and not the other way around. Mathematics stopped being a science of theories but reappeared to me as a science of numbers and shapes.
- Alexander Stepanov, Bjarne Stroustrup: Evolving a language in and for the real world: C++ 1991-2006. ACM HOPL-III. June 2007.. Archived from the original on 2007-11-20. Retrieved on 2008-04-25..