Pierre Curie, a brilliant scientist, happened to marry a still more brilliant one-Marie, the famous Madame Curie-and is the only great scientist in history who is consistently identified as the husband of someone else.

Any teacher that can be replaced by a computer should be replaced by a computer.

When stupidity is considered patriotism, it is unsafe to be intelligent.

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.

There is not a discovery in science, however revolutionary, however sparkling with insight, that does not arise out of what went before.

A subtle thought that is in error may yet give rise to fruitful inquiry that can establish truths of great value.

When asked for advice by beginners. Know your ending, I say, or the river of your story may finally sink into the desert sands and never reach the sea.