Man can be chained, but he cannot be domesticated.

Don't ever become a pessimist... a pessimist is correct oftener than an optimist, but an optimist has more fun, and neither can stop the march of events.

Once upon a time there was a Martian named Valentine Michael Smith.

When I don’t understand, I have an unbearable itch to know why.

Animals can be driven crazy by placing too many in too small a pen. Homo sapiens is the only animal that voluntarily does this to himself.

The bugs are not like us. The Pseudo-Arachnids aren’t even like spiders. They are arthropods who happen to look like a madman’s conception of a giant intelligent spider, but their organization, psychological and economic, is more like that of ants or termites; they are communal entities, the ultimate dictatorship of the hive.

Once a man gets a reputation as a liar, he might as well be struck dumb, for people do not listen to the wind.