When we see an apple we merely react to the light it reflects.

He brought his philosophy that defenses should attack, and not merely react.

The phrase "Pavlov's dog" is often used to describe someone who merely reacts to a situation rather than using critical thinking.

For what seemed like forever, she had been merely reacting to a series of crises, without the opportunity to think things through.

They are merely reacting to circumstances that increase the probability of detection or apprehension.

Humans have free will, though, unlike sharks who merely react to their environment.

High grades here go to those who are not merely reacting against Bush, but have their own view of the threats and opportunities we face.

On both occasions, however, he was merely reacting to a Catholic challenge.

But, increasingly, he felt that he was merely reacting to crime instead of preventing it.

Washington, though, still seems to be merely reacting to - and sometimes misinterpreting - events.