Wisdom in place of heroic stories? (8)

I believe the answer is:

sagacity

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'wisdom' is the definition.
(I know that sagacity is a type of wisdom)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for sagacity that I've seen before include "good judgment?" , "Good judgement, wisdom or shrewdness" , "A gas city for wisdom and know-how" , "Astuteness" , "It's a cagy kind of wisdom" .)

I've seen this clue in The Times.

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