“Development of human race takes place in discovering new options on how to improve anything, mostly the human itself”

"Notes about Music" (29 March 1946) also quoted in Ramblin' Man: The Life and Times of Woody Guthrie (2004) by Ed Cray
Context: No matter how bad the wicked world has hurt you, in the long run, there is something gained, and it is all for the best … The note of hope is the only note that can help us or save us from falling to the bottom of the heap of evolution, because, largely, about all a human being is, anyway, is just a hoping machine, a working machine, and any song that says, the pleasures I have seen in all of my trouble, are the things I never can get — don't worry — the human race will sing this way as long as there is a human to race.
The human race is a pretty old place.

Source: The Enemy Stars (1959), Chapter 5 (p. 38)

Interview (20 September 1988), included in Star Trek: The Next Generation Season 5, DVD 7, "Mission Logs: Year Five", "A Tribute to Gene Roddenberry", 0:26:09)
Context: Star Trek speaks to some basic human needs: that there is a tomorrow — it's not all going to be over with a big flash and a bomb; that the human race is improving; that we have things to be proud of as humans. No, ancient astronauts did not build the pyramids — human beings built them, because they're clever and they work hard. And Star Trek is about those things.

Source: The Mass Psychology of Fascism (1933), Ch. 1 : Ideology As Material Power, Section 1 : The Divergence Of Ideology And Economic Situation
Context: Revolutionary practice in any field of human existence develops by itself if one comprehends the contradictions in every new process; it consists in siding with those forces which act in the direction of progressive development. To be radical, according to Marx, means "going to the root of things." If one goes to the root of things, if one understands their contradictory character, the means of mastering the reaction become plain.

Source: Love Is a Dog from Hell

"Three Methods Of Reform" in Pamphlets : Translated from the Russian (1900) as translated by Aylmer Maude, p. 29
As quoted in The Artist's Way at Work : Riding the Dragon (1999) by Mark A. Bryan with Julia Cameron and Catherine A. Allen, p. 160
Variant: Everyone thinks of changing the world, but no one thinks of changing himself.

Source: Words of a Sage : Selected thoughts of African Spir (1937), p. 61.