Crossword puzzle clue "short spell of action"

Spell "spell" "spel," say

You need it to spell "spell"

Spell summons other spell developers?

Short spell of action

It doesn't convey ferocious fuel-burning action, action, action! when it's regular-sized

Hardly a short spell

Piece of the action, or a shout that stops the action

Who said "Action may not always bring happiness, but there is no happiness without action."