If an elderly respected expert in a given field tells you that something can be done he is almost certainly right. If an elderly respected expert in a given field tells you that something is impossible, he is almost certainly wrong.
Robert A. HeinleinThere are a dozen different ways of delivering destruction in impersonal wholesale, via ships or missiles of one sort or another, catastrophes so widespread, so unselective that the war is over because that nation or planet has ceased to exist. What we do is entirely different. We make war as personal as a punch in the nose. We can be selective, applying precisely the required amount of pressure at the specified point at a designated time. We've never been told to go down and kill or capture all left-handed redheads in a particular area, but if they tell us to, we can. We will.
Robert A. HeinleinDon't appeal to mercy to God the Father up in the sky, little man, because he's not at home and never was at home, and couldn't care less. What you do with yourself, whether you are happy or unhappy- live or die- is strictly your business and the universe doesn't care. In fact you may be the universe and the only cause of all your troubles. But, at best, the most you can hope for is comradeship with comrades no more divine (or just as divine) as you are. So quit sniveling and face up to it- 'Thou art God!'
Robert A. Heinlein