
Source: I Sonetti Di Michelangelo: The 78 Sonnets of Michelangelo with Verse Translation
The Notebooks of Leonardo Da Vinci (1938), XXIX Precepts of the Painter
Source: I Sonetti Di Michelangelo: The 78 Sonnets of Michelangelo with Verse Translation
"If Only This Could Be Said" To Begin Where I Am: Selected Essays by Czesŀaw Miŀosz (2001) edited and translated by Bogdana Carpenter and Madeline G. Levine <!-- publisher Farrar, Straus and Giroux -->
Context: Evil grows and bears fruit, which is understandable, because it has logic and probability on its side and also, of course, strength. The resistance of tiny kernels of good, to which no one grants the power of causing far-reaching consequences, is entirely mysterious, however. Such seeming nothingness not only lasts but contains within itself enormous energy which is revealed gradually.
Gallery Notes, Allbright-Knox Art Gallery, Vol. 24 summer 1961 pp. 9-14; as quoted in Abstract Expressionism Creators and Critics, edited by Clifford Ross, Abrams Publishers New York 1990, p. 197
1960s
The Revolution of Hope: Toward a Humanized Technology (1968),<!-- Harper & Row, New York --> p. 61
Context: Man is born as a freak of nature, being within nature and yet transcending it. He has to find principles of action and decision-making which replace the principles of instincts. He has to have a frame of orientation which permits him to organize a consistent picture of the world as a condition for consistent actions. He has to fight not only against the dangers of dying, starving, and being hurt, but also against another danger which is specifically human: that of becoming insane. In other words, he has to protect himself not only against the danger of losing his life but also against the danger of losing his mind.
As quoted by Ludwig Boltzmann in a letter to Nature (28 February 1895) http://books.google.com/books?id=PnUCAAAAIAAJ
1870s, The History of Freedom in Antiquity (1877)
The Notebooks of Leonardo da Vinci (1883), IX The Practice of Painting