A Quote by George F. R. Ellis

If we analyse the supernova data by assuming the Copernican principle is correct and get out something unphysical, I think we should start questioning the Copernican principle…. Whatever our theoretical predilections, they will in the end have to give way to the observational evidence.
There are lots of ideas which extend the Copernican principle one step further. We went from the solar system to the galaxy to zillions of galaxies and now to realising even that isn't all there is.
[The] first postulate of the Principle of Uniformity, namely, that the laws of nature are invariant with time, is not peculiar to that principle or to geology, but is a common denominator of all science. In fact, instead of being an assumption or an ad hoc hypothesis, it is simply a succinct summation of the totality of all experimental and observational evidence.
While the Copernican principle comes with no guarantees that it will forever guide us to cosmic truths, it's worked quite well so far: not only is Earth not in the center of the solar system, but the solar system is not in the center of the Milky Way galaxy, the Milky Way galaxy is not in the center of the universe, and it may come to pass that our universe is just one of many that comprise a multiverse. And in case you're one of those people who thinks that the edge may be a special place, we are not at the edge of anything either.
The principle, that should be a fundamental principle in our democracy, the principle of "one person, one vote," says that the vote of every American should count equally. And if it does, Hillary Clinton should be the president of the United States.
I think our basic principle that this is a free market system and that that has worked for us, that it creates innovation and risk taking, I think that's a principle that we've gotta hold to as well. But what I don't wanna do is get bottled up in a lot of ideology and is this conservative or liberal. My interest is finding something that works.
In a Nutshell - Fundamental Techniques In Handling People; Principle 1 - Don't criticize, condemn or complain; Principle 2 - Give honest and sincere appreciation; Principle 3 - Arouse in the other person an eager want.
Philosophers should consider the fact that the greatest happiness principle can easily be made an excuse for a benevolent dictatorship. We should replace it by a more modest and more realistic principle - the principle that the fight against avoidable misery should be a recognized aim of public policy, while the increase of happiness should be left, in the main, to private initiative.
I don't think that has to be our choice... This party was born in principle. This party will die if it doesn't stand by its decision of principle.
The negative principle negates. The positive principle creates. The negative principle doubts. The positive principle believes. The negative principle accepts defeat. The positive principle goes for victory.
Principle will, in... most... cases open the way for us to correct conclusion.
A principle is a principle and in no case can it be watered down because of our incapacity to live it in practice. We have to strive to achieve it, and the striving should be conscious, deliberate and hard.
Here is a guiding principle: If a business collects data on consumers electronically, it should provide them with a version of that data that is easy to download and export to another Web site.
The Copernican revolution brought about by Kant was, I think, the most important single turning point in the history of philosophy.
It is together that we will be able to save our biodiversity. This is a principle of effectiveness. But it is also a principle of humility; none of us can act alone.
Honesty is a principle. Service is a principle. Love is a principle. Hard work is a principle. Respect, gratitude, moderation, fairness, integrity, loyalty, and responsibility are principles. There are dozens and dozens more. They are not hard to identify. Just as a compass always points to true north, your heart will recognize true principles.
The principle of happiness should be like the principle of virtue: it should not be dependent of things, but be a part of personality [and character].
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