Quotes:

When your hammer is strong enough, all your problems start looking like nails.
Iron only bends when it is hot.
A chain is only as strong as its weakest link.
As iron sharpens iron, man sharpens fellow man.
Good steel is not wasted to make nails.
Defense is the anchor of the anvil, offense the relentlessness of the hammer.
Just as a gem cannot be polished without friction, man cannot be perfected with trials.
It is better to wear out than to rust out.
Hard steel is not tempered with soft mediums.
A hammer shatters glass but forges steel.
How many irons in the fire?