Some interesting Quotes.
If you were to say to a physicist in 1899 that in 1999, a hundred years later. . . .bombs of unimaginable power would threaten the species;. . . .that millions of people would take to the air every hour in aircraft capable of taking off and landing without human touch;. . . .that humankind would travel to the Moon, and then lose interest. . . .the physicist would almost certainly pronounce you mad.
Michael Crichton
What manner of creature are we? It took 100,000 years for humans to get inches off the ground. Then, astonishingly, it took only 66 to get from Kitty Hawk to the Moon. And then, still more astonishingly, we lost interest, spending the remaining 30 years of the 20th century going around in circles in low Earth orbit, i.e., going nowhere.
Black holes are where God divided by zero.