A purely human concept and one that does not sustain close analysis.

And the fact that whales cannot fathom a human concept such as freedom should not matter.

It is a general human religious concept that men drive animals and god drives men.

Since these are human concepts, they require the addition of fuzzy logic.

Martian manners were not grounded on human concepts: they wanted to know.

Several definitions of this universal human concept are used according to context, need and convenience.

Because it's a human concept, and humans will always justify in their own minds what they want to do, as acceptable.

There aren't any human concepts for so much of it.

It can't because time is a human concept of how things change compared to other things.

Everything on it was so alien to human concept yet vaguely arresting.