What Eric hadn't taken fully into account was his parents' sheer idiotic tenacity.

He discovers that his sheer tenacity and desire to learn make him "pretty well a one-in-a-million bird."

His people endure, some by sheer tenacity, others with a cautious, hard-earned hope.

And few can match him for sheer tenacity.

They all attribute the survival of Montero to sheer tenacity.

But long after the Stones could have retired, it's not so bad to stand for sheer tenacity.

She was amazed by his sheer tenacity and his stupidity.

"What surprised me were the complications getting it done, the sheer tenacity you need to keep going," she said.

What no one has ever quantified in a jazz singing career, though, is the value of sheer tenacity and ambition.

What he lacked in skill, he made up for with sheer tenacity and ferocity.