During the siege a strange event took place, from which each army seemed to derive strength to continue the fight.

He made an effort and swam back to the side, touching it as if to derive strength.

The General derived all his strength, in fact, from his humanity.

From some source he had derived strength and conviction afresh.

He derives strength and courage from his family's support.

It's from the scenes in this building that we derive our strength.

Yet he derives emotional strength merely from the knowledge of her existence.

My uncle and myself will own to our dying day that hence we derived strength to exist until the last bitter moment.

The program derives its strength from the diverse backgrounds of its students.

Though the community is diminished by this loss, we derive strength from the memory of his dedication and vitality.