Histrionically Mae West shakes at words of wisdom? (5,5,5)

I believe the answer is:

haste makes waste

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'wisdom?' is the definition.
I don't know anything about this answer so I can't judge whether this works.

'histrionically mae west shakes at words' is the wordplay.
'mae west shakes at' can be anagrammed to 'HASTE MAKES WASTE'.
However, I'm unsure how this is indicated.

'of' is the link.

Can you help me to learn more?

I've seen this clue in The Telegraph.

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