"How posterity will laugh at us, one way or other! If half a dozen break their necks, and balloonism is exploded, we shall be called fools for having imagined it could be brought to use: if it should be turned to account, we shall be ridiculed for having doubted."

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The facts of nature cannot in the long run be violated. Penetrating and seeping through everything like water, they will undermine any system that fails to take account of them, and sooner or later they will bring about its downfall. But an authority wise enough in its statesmanship to give sufficient free play to nature - of which spirit is a part - need fear no premature decline.

— Carl Jung