““To stamp becoming with the character of being—that is the supreme will to power.” (WM 617) This suggests that becoming only is if it is grounded in being as being: “That everything recurs is the closest approximation of a world of becoming to one of being.””
Source: Nietzsche (1961), p. 19
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Martin Heidegger 69
German philosopher 1889–1976Related quotes

“Only by being cultivated does a human being … become altogether human and permeated by humanity.”
Nur durch die Bildung wird der Mensch, der es ganz ist überall menschlich und von Menschheit durchdrungen.
“Ideas,” Lucinde and the Fragments, P. Firchow, trans. (1991), § 65

"What it Means to be a Human Being" Speech (2001)
“Only by being a man or woman for others does one become fully human.”
'Men for Others' http://www.creighton.edu/CollaborativeMinistry/men-for-others.html, 1973, Valencia, Spain
"Avant Garde Attitudes" http://www.sharecom.ca/greenberg/avantgarde.html, The John Power Lecture in Contemporary Art, University of Sydney, (17 May 1968); printed by The Power Institute of Fine Arts, University of Sydney (1969)
1960s

“Selected Aphorisms from the Athenaeum (1798)”, Dialogue on Poetry and Literary Aphorisms, Ernst Behler and Roman Struc, trans. (Pennsylvania University Press:1968) #54
Athenäum (1798 - 1800)

“Become conscious of being conscious.”
Source: A New Earth: Awakening to Your Life's Purpose

Systematic Theology (1951–63)
Context: The question now arises: What is the content of our ultimate concern? What does concern us unconditionally? The answer, obviously, cannot be a special object, not even God, for the first criterion of theology must remain formal and general. If more is to be said about the nature of our ultimate concern, it must be derived from an analysis of the concept “ultimate concern.” Our ultimate concern is that which determines our being or not-being. Only those statements are theological which deal with their object in so far as it can become a matter of being or not-being for us.