Sentient beings, whatever their culture, tended to have certain needs.

Sarah turned her head sideways and asked: 'You think that human beings tend to reproduce certain patterns?

You human beings tend to want good things to last forever.

Human beings tend to make strong bonds of affection or attachment with others.

Once upon a time, living beings had tended these sensitive devices.

"A struggle for existence inevitably follows from the high rate at which organic beings tend to increase".

When frightened, human beings tend to yelp, or cry out.

If a finite resource is free, human beings tend to use it all up, regardless of the consequences.

Civilized beings tend to consider themselves in control of nature, exempt from its cycles.

They believe human beings tend to anticipate unpleasant future events and seek in advance to avoid them.