Sentence examples for diligent tenacity from inspiring English sources

He also did not apply himself to higher mathematics—advanced geometry and arithmetic until he was 30 years old, when he began to study it with diligent tenacity.

3.  Tenacity.

"Diligent inquiry"?

And tenacity".

Very diligent.

How is their tenacity?

Tenacity is persistence.

"A document of tenacity".

Strengths: Tenacity, pursuit, tackling.

Talk about tenacity.

"Tenacity, brains and charm.