The Medici created and destroyed me.

 

The Medici created and destroyed me.

 

Leonardo da Vinci

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The cosmos itself must of necessity be indestructible and uncreated. Indestructible because, suppose it destroyed: the only possibility is to make one better than this or worse or the same or a chaos. If worse, the power which out of the better makes the worse must be bad. If better, the maker who did not make the better at first must be imperfect in power. If the same, there will be no use in making it; if a chaos... it is impious even to hear such a thing suggested. These reasons would suffice to show that the world is also uncreated: for if not destroyed, neither is it created. Everything that is created is subject to destruction.

 

Sallustius (or Sallust)

 

Everything that is destroyed is either destroyed by itself or by something else. If the world is destroyed by itself, fire must needs burn of itself and water dry itself. If by something else, it must be either by a body or by something incorporeal. By something incorporeal is impossible; for incorporeal things preserve bodies — nature, for instance, and soul — and nothing is destroyed by a cause whose nature is to preserve it. If it is destroyed by some body, it must be either by those which exist or by others. … But if the world is to be destroyed by other bodies than these it is impossible to say where such bodies are or whence they are to arise.

 

Sallustius (or Sallust)

 

We had risen to probably one of the greatest challenges in history, put a man on the moon in the decade. We'd created incredible technologies. But what was most important, we'd created the teams, what I call the human factor. People who were energized by a mission. And these teams were capable of moving right on and doing anything America asked them to do in space. And what we did is we watched these teams disappear. We watched the great contractors — the Grummans, the North Americans, the Lockheeds — disappear from the horizon. I think that's really sad that as Americans we have destroyed much of this infrastructure that we had in the days when we went to the moon.

 

Eugene F. Gene Kranz

 

People who think they can control their negative emotions and manifest them when they want to, simply deceive themselves. Negative emotions depend on identification; if identification is destroyed in some particular case, they disappear. The strangest and most fantastic fact about negative emotions is that people actually worship them. I think that, for an ordinary mechanical man, the most difficult thing to realise is that his own and other people's negative emotions, have no value whatever and do not contain anything noble, anything beautiful or anything strong. In reality negative emotions contain nothing but weakness and very often the beginning of hysteria, insanity or crime. The only good thing about them is that, being quite useless and artificially created by imagination and identification, they can be destroyed without any loss. And this is the only chance of escape that man has.

 

P. D. Ouspensky

 

Just as there are Laws of Conservation of Matter and Energy, so there are in fact Laws of Conservation of Pain and Joy. Neither can ever be created or destroyed.
But one can be converted into the other.

 

Spider Robinson