The answer is two of the most basic human emotions - greed and ego.

She always felt sorry for couples who were unable to plug into each other's basic emotions.

Although the characters seems very different from real people, the story tells us all about basic human emotions.

His studies focus on the recognition from basic emotions, particularly the smile.

He heard his own voice, realized how basic this emotion was.

Then again, despite all the growth in abilities, basic human emotions never changed.

These and other works test our frustration, a basic emotion.

At a very young age, children are able to identify different, basic facial emotions.

Dominating them all was the simple and basic emotion of fear.

Its function is to aid all basic and proximate emotions.