The hills of the upland were Revelstone's secret strength.

This was his secret strength.

I have secret strengths!

This is the secret strength of the Jewish people, I believe.

The earth answered, yielding up its secret strength.

There were still dull stretches, but the best moments hinted at the group's secret strength: machismo.

The secret strength of the money he held did not lie merely in the fact that it was his money.

They were her eyes and her ears in the city, her secret strength.

The desire to return to her was a secret strength in him that overcame injury, sickness, and pain.

In New York State's Capitol, special-interest groups have a secret strength.