There's nothing motivating them here but pure self-interest.

Part of his decision was pure self-interest.

The attempt to provide public goods without coercion departs from pure self-interest.

Experiments show that people cooperate to contribute toward a public good to a degree greater than would be implied by pure self-interest.

Out of pure self-interest they want it to snow - often and a lot.

His political conversion began out of pure self-interest.

Part of the reason was pure self-interest.

I'm just saying that pure self-interest could have brought me here.

In order words, customers will inform themselves out of pure self-interest.

As with the previous series, his motivation for helping the Romans stems from greed and pure self-interest.