“What we mean by information — the elementary unit of information — is a difference which makes a difference, and it is able to make a difference because the neural pathways along which it travels and is continually transformed are themselves provided with energy. The pathways are ready to be triggered. We may even say that the question is already implicit in them.”
Source: Steps to an Ecology of Mind (1972), p. 459, Chapter " Form, Substance and Difference http://www.rawpaint.com/library/bateson/formsubstancedifference.html#Anchor-39583"
Help us to complete the source, original and additional information
Gregory Bateson 49
English anthropologist, social scientist, linguist, visual … 1904–1980Related quotes

Source: Morals and Dogma of the Ancient and Accepted Scottish Rite of Freemasonry (1871), Ch. XXII : Grand Master Architect, p. 193
Context: Life is what we make it, and the world is what we make it. The eyes of the cheerful and of the melancholy man are fixed upon the same creation; but very different are the aspects which it bears to them. To the one, it is all beauty and gladness; the waves of ocean roll in light, and the mountains are covered with day. Life, to him, flashes, rejoicing, upon every flower and every tree that trembles in the breeze. There is more to him, everywhere, than the eye sees; a presence of profound joy, on hill and valley, and bright, dancing water. The other idly or mournfully gazes at the same scene, and everything wears a dull, dim, and sickly aspect. The murmuring of the brooks is a discord to him, the great roar of the sea has an angry and threatening emphasis, the solemn music of the pines sings the requiem of his departed happiness, the cheerful light shines garishly upon his eyes and offends him. The great train of the seasons passes before him like a funeral procession; and he sighs, and turns impatiently away. The eye makes that which it looks upon; the ear makes its own melodies and discords: the world without reflects the world within.

“A difference which makes no difference is no difference at all.”
As quoted in William James: The Essential Writings (1971), edited by Bruce W. Wilshire, p. xiii
1900s
Source: Designing complex organizations, 1973, p. 5
Source: Organization and environment: Managing differentiation and integration, 1967, p. 11

Reflections on Various Subjects (1665–1678), III. On Taste
It – How Churches and Leaders Can Get It and Keep It (2008, Zondervan)