Your assumptions are your windows on the world. Scrub them off every once in a while, or the light won’t come in.

Some readers may realize that this story, first published in 1956, has been overtaken by events. In 1965, astronomers discovered that Mercury does not keep one side always to the Sun, but has a period...

There’s so much knowledge to be had that specialists cling to their specialties as a shield against having to know anything about anything else. They avoid being drowned.

Well, sir to say that when the impossible has been eliminated, whatever remains, however improbable, is the truth, is to make the assumption, usually justified, that everything that is to be considered has indeed been...

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...