Quotations can be valuable, like raisins in the rice pudding, for adding iron as well as eye appeal.
The old Inquisition had its rack and its thumbscrews and its instruments of torture with iron teeth.
When two people are at one in their inmost hearts, they shatter even the strength of iron or bronze.
This iron world bungs down the stoutest hearts to lowest state; for misery doth bravest minds abate.