This quote highlights a sudden realization or revelation in Scotland's culture or history that previously went unnoticed or unrecognized. It suggests that Scotland was relying on an unseen support or strength that has now become apparent or lost, indicating a moment of change or awakening.
The phrase emphasizes the idea that Scotland had hidden resilience or resources which, when confronted with a challenge, become evident. It reflects the theme of uncovering inner strength or a new perspective that was previously not recognized or utilized.