Were they creatures of pure instinct, or were they capable of thought?

I acted on pure instinct and rooted my feet into the floor.

But in between, his father had been... gone, acting on pure instinct.

Strictly speaking, he had no method; painting with him was a pure instinct.

Mareble and Danal took off after him; it was pure instinct.

I quit trying to think and started running again, operating on pure instinct.

His reading of the game -which was pure instinct -was brilliant.

After this long practicing stealth, he was acting on pure instinct.

She smiled, and acting on pure instinct, James lowered his mouth to hers.

With pure instinct, Dante reached out to wrap her slight form in his arms.

It was pure instinct, the Russian couldn't help glancing over at his fallen companion.

But she got it open on pure instinct and then took out the present.

He didn't think, but it had never frightened him to operate on pure instinct.

She had acted on pure instinct, with no anger and no desire to harm.

But that is all pure instinct, papa; now you said that animals had reasoning powers.

I didn't think about it; it was pure instinct.