“No great thing is created suddenly, any more than a bunch of grapes or a fig.”
Epictetus treats worthwhile development as organic rather than instantaneous: ability, character and reconciliation require stages of growth that cannot be skipped simply because the final result is desired now.
Source details
Discourses of Epictetus, Book I, Chapter XV, “What Philosophy Promises,” George Long translation; 1877 George Bell & Sons witness on Wikisource, cross-checked against Project Gutenberg #10661. Epictetus answers a request for immediate improvement with the fig/grape analogy: nothing great is produced suddenly and development requires time.