Intrinsic motivation is your own, natural desire to do things well.

One may still care for the person as required by policy, however, the natural human desire to help them is significantly diminished.

"Both of them at this age have a natural desire to help out."

Be like your brother, with his natural desire to study regardless of the conditions.

Why a natural desire to help finish the work we began.

But he added that the party needed to be careful about the nation's natural desire for change after eight years of Democratic power.

She'll have a natural desire to show she's got a mind of her own.

But humans are not alone in their natural desire to help out the next of kin.

It's important to respect your adolescent's natural desire to keep some things to himself.

A human being has a natural desire to have more of a good thing than he needs.