“There is nothing to life that has value, except the degree of power—assuming that life itself is the will to power.”

Source: Political Theology: Four Chapters on the Concept of Sovereignty

Source: Man for Himself: An Inquiry into the Psychology of Ethics

Source: On the Origin of Species (1859), chapter VII: "Instinct", page 207 http://darwin-online.org.uk/content/frameset?pageseq=225&itemID=F373&viewtype=side
Context: I must premise, that I have nothing to do with the origin of the primary mental powers, any more than I have with that of life itself. We are concerned only with the diversities of instinct and of the other mental qualities of animals within the same class.

Source: Two Boys Kissing

Power and the Useful Economist (1973)
Context: When the modern corporation acquires power over markets, power in the community, power over the state and power over belief, it is a political instrument, different in degree but not in kind from the state itself. To hold otherwise — to deny the political character of the modern corporation — is not merely to avoid the reality. It is to disguise the reality. The victims of that disguise are those we instruct in error. The beneficiaries are the institutions whose power we so disguise. Let there be no question: economics, so long as it is thus taught, becomes, however unconsciously, a part of the arrangement by which the citizen or student is kept from seeing how he or she is, or will be, governed.

III, 11
Meditations (c. 121–180 AD), Book III

Source: The Power of Myth (book), p. 28
Context: Now, what is a myth? The dictionary definition of a myth would be stories about gods. So then you have to ask the next question: What is a god? A god is a personification of a motivating power or a value system that functions in human life and in the universe - the powers if your own body and of nature.

Can Socialism come by Constitutional Methods? (1933), p. 2, quoted in Hugh Dalton, The Fateful Years. Memoirs 1931-1945 (London: Frederick Muller Ltd, 1957), p. 151.