The career's only constant has been the woman driving it.

The only cultural constants in his life were books, movies, and radio.

The only constant in this huge landscape is the people themselves.

It seemed now the only constant in his uncertain world.

The only constant in the man was the desire to kill.

I think the only constant is change, and it's always slow.

Numbers, he liked to say, were the only constant in his life.

These have been the only constants for the team this season.

"In this kind of competitive environment, the only constant is change."

The only constant is that power derives from the President.