mainspring

The mainspring of the company's success is its innovative products.

Motivation is the mainspring that drives people to achieve their goals.

Trust is the mainspring of a healthy relationship.

Curiosity is the mainspring of learning and discovery.

Passion is the mainspring that fuels creativity and innovation.

The mainspring of economic growth is investment in infrastructure.

Education is the mainspring of social progress and development.

The mainspring of a good story is a compelling plot.

Innovation is the mainspring of technological advancement.

Teamwork is the mainspring of a successful project.

She's one of those folks Will was talking about. Her mainspring's busted. Sometimes I wonder if she won't go the way your pa went.

The mainspring of his existence was taken away when she died and with it had gone his bounding assurance, his impudence and his restless vitality.

But acquisitiveness, although it is the mainspring of the capitalist system, is by no means the most powerful of the motives that survive the conquest of hunger.

Toby Tullis had wanted to know what made Leslie Searle tick; and Grant, too, lying with his eyes on the ceiling, unmoving for an hour at a time, was looking for the mainspring of Leslie Searle's mind.