It is no great art to say something briefly when, like Tacitus, one has something to say; when one has nothing to say, however, and none the less writes a whole book and makes truth into a liar - that I call an achievement.
If, in the course of a thousand or two thousand years, science arrives at the necessity of renewing its points of view, that will not mean that science is a liar. Science cannot lie, for it's always striving, according to the momentary state of knowledge, to deduce what is true. When it makes a mistake, it does so in good faith. It's Christianity that's the liar. It's in perpetual conflict with itself.
Success has always been the greatest liar - and the "work" itself is a success; the great statesman, the conqueror, the discoverer is disguised by his creations, often beyond recognition; the "work," whether of the artist or the philosopher, invents the man who has created it, who is supposed to have create it; "great men," as they are venerated, are subsequent pieces of wretched minor fiction
The liar is no whit better than the thief, and if his mendacity takes the form of slander he may be worse than most thieves. It puts a premium upon knavery untruthfully to attack an honest man, or even with hysterical exaggeration to assail a bad man with untruth.
I would be a liar, a hypocrite, or a fool - and I'm not any of those - to say that I don't write for the reader. I do. But for the reader who hears, who really will work at it, going behind what I seem to say. So I write for myself and that reader who will pay the dues.
But I hate things all fiction... there should always be some foundation of fact for the most airy fabric - and pure invention is but the talent of a liar.
About God, I cannot accept any concept based on the authority of the Church... As long as I can remember. I have resented mass indoctrination. I cannot prove to you there is no personal God, but if I were to speak of him, I would be a liar. I do not believe in the God of theology who rewards good and punishes evil. His universe is not ruled by wishful thinking, but by immutable laws
Some years ago John Kenneth Galbraith wrote in an essay on his efforts at writing a history of economics: 'As one approaches the present, one is filled with a sense of hopelessness; in a year and possibly even a month, there is now more economic comment in the supposedly serious literature than survives from the whole of the thousand years commonly denominated as the Middle Ages ... anyone who claims to be familiar with it all is a confessing liar.' I believe that all physicists would subscribe to the same sentiments regarding their own professional literature. I do at any rate.