To succeed, planning alone is insufficient. One must improvise as well.
Science is a mechanism, a way of trying to improve your knowledge of nature. It’s a system for testing your thoughts against the universe, and seeing whether they match.
The significant chemicals of living tissue are rickety and unstable, which is exactly what is needed for life.
There seems to be a feeling that anything that is natural is good. Strychnine is natural.
Finished products are for decadent minds.
Inspect every piece of pseudoscience and you will find a security blanket.
The cure for advanced gullibility is to go to sleep and consider matters again the next day.
It is not only the living who are killed in war.
Creationists make it sound as though a ‘theory’ is something you dreamt up after being drunk all night.
To surrender to ignorance and call it God has always been premature, and it remains premature today.
The age of the pulp magazine was the last in which youngsters, to get their primitive material, were forced to be literate.
I don’t believe in personal immortality; the only way I expect to have some version of such a thing is through my books.
Today’s science fiction is tomorrow’s science fact.
It takes more than capital to swing business. You’ve got to have the A. I. D. degree to get by – Advertising, Initiative, and Dynamics.
Of course there are worlds. Millions of them! Every star you see has worlds, and most of those you don’t see.
Scientific apparatus offers a window to knowledge, but as they grow more elaborate, scientists spend ever more time washing the windows.
Things do change. The only question is that since things are deteriorating so quickly, will society and man’s habits change quickly enough?
What lasts in the reader’s mind is not the phrase but the effect the phrase created: laughter, tears, pain, joy. If the phrase is not affecting the reader, what’s it doing there? Make it do its job or cut it without mercy or remorse.
Humanity has the stars in its future, and that future is too important to be lost under the burden of juvenile folly and ignorant superstition.
It’s not so much what you have to learn if you accept weird theories, it’s what you have to UNlearn.