Created by Tedshots.

Population will mightily increase, and the earth will be a garden.
Governments will be conducted with the quietude and regularity of
club committees. The interest which is now felt in politics will
be transferred to science; the latest news from the laboratory of
the chemist, or the observatory of the astronomer, or the
experimenting room of the biologist will be eagerly discussed.
…
Men will look upon this star as their fatherland; its progress
will be their ambition; the gratitude of others their reward.
…
Disease will be extirpated; the causes of decay will be removed;
immortality will be invented. And then, the earth being small,
mankind will migrate into space, and will cross the airless Saharas
which separate planet from planet, and sun from sun. The earth will
become a Holy Land which will be visited by pilgrims from all
the quarters of the universe. Finally, men will master the
forces of Nature; they will become themselves architects of
systems, manufacturers of worlds.

–The Martyrdom of Man, Winwood Reade, 1872

“Trying to get everyone to like you is a sign of mediocrity”

The full quote is an even better read:

“Good leadership involves responsibility to the welfare of the group, which means that some people will get angry at your actions and decisions. It’s inevitable, if you’re honorable. Trying to get everyone to like you is a sign of mediocrity: you’ll avoid the tough decisions, you’ll avoid confronting the people who need to be confronted, and you’ll avoid offering differential rewards based on differential performance because some people might get upset. Ironically, by procrastinating on the difficult choices, by trying not to get anyone mad, and by treating everyone equally "nicely" regardless of their contributions, you’ll simply ensure that the only people you’ll wind up angering are the most creative and productive people in the organization.”

Also very true:

“The day soldiers stop bringing you their problems is the day you have stopped leading them. They have either lost confidence that you can help them or concluded that you do not care. Either case is a failure of leadership.”

And

“Good leaders don’t wait for official blessing to try things out. They’re prudent, not reckless. But they also realize a fact of life in most organizations: if you ask enough people for permission, you’ll inevitably come up against someone who believes his job is to say "no." So the moral is, don’t ask. Less effective middle managers endorsed the sentiment, "If I haven’t explicitly been told ‘yes,’ I can’t do it," whereas the good ones believed, "If I haven’t explicitly been told ‘no,’ I can." There’s a world of difference between these two points of view.”

And

“Organization doesn’t really accomplish anything. Plans don’t accomplish anything, either. Theories of management don’t much matter. Endeavors succeed or fail because of the people involved. Only by attracting the best people will you accomplish great deeds.”

“We succeeded in taking that picture [from deep space], and if you look at it, you see a dot. That’s here. That’s home. That’s us. On it everyone you love, everyone you know, everyone you ever heard of, every human being who ever was, lived out their lives. The aggregate of our joy and suffering, thousands of confident religions, ideologies, and economic doctrines, every hunter and forager, every hero and coward, every creator and destroyer of civilization, every king and peasant, every young couple in love, every mother and father, hopeful child, inventor and explorer, every teacher of morals, every corrupt politician, every “superstar,” every “supreme leader,” every saint and sinner in the history of our species lived there — on a mote of dust suspended in a sunbeam.

The Earth is a very small stage in a vast cosmic arena. Think of the rivers of blood spilled by all those generals and emperors, so that, in glory and triumph, they could become the momentary masters of a fraction of a dot. Think of the endless cruelties visited by the inhabitants of one corner of this pixel on the scarcely distinguishable inhabitants of some other corner, how frequent their misunderstandings, how eager they are to kill one another, how fervent their hatreds. Our posturings, our imagined self-importance, the delusion that we have some privileged position in the Universe, are challenged by this point of pale light.

Our planet is a lonely speck in the great enveloping cosmic dark. In our obscurity, in all this vastness, there is no hint that help will come from elsewhere to save us from ourselves. The Earth is the only world known so far to harbour life. There is nowhere else, at least in the near future, to which our species could migrate. Visit, yes. Settle, not yet. Like it or not, for the moment the Earth is where we make our stand. It has been said that astronomy is a humbling and character building experience. There is perhaps no better demonstration of the folly of human conceits than this distant image of our tiny world. To me, it underscores our responsibility to deal more kindly with one another, and to preserve and cherish the pale blue dot, the only home we’ve ever known.”

– Carl Sagan, May 11, 1996

Resources:
APOD for Oct 16th 2006 “In the Shadow of Saturn” (a newer perhaps better “blue dot” image)
NASA / JPL detail on the above image