“Sheer power of a great poem is enough to guarantee that it will ultimately make itself felt, if the reader is in a receptive mood.”

Source: Culture and Value (1980), p. 75e

The portion of "The figure a poem makes. It begins in delight and ends in wisdom." is often misquoted as: Poetry begins in delight and ends in wisdom.
The Figure a Poem Makes (1939)
Context: It should be of the pleasure of a poem itself to tell how it can. The figure a poem makes. It begins in delight and ends in wisdom. The figure is the same as for love. No one can really hold that the ecstasy should be static and stand still in one place. It begins in delight, it inclines to the impulse, it assumes direction with the first line laid down, it runs a course of lucky events, and ends in a clarification of life-not necessarily a great clarification, such as sects and cults are founded on, but in a momentary stay against confusion. It has denouement. It has an outcome that though unforeseen was predestined from the first image of the original mood-and indeed from the very mood. It is but a trick poem and no poem at all if the best of it was thought of first and saved for the last. It finds its own name as it goes and discovers the best waiting for it in some final phrase at once wise and sad-the happy-sad blend of the drinking song.

Table-Talk (1857)

"Answers to Questions," from Mid-Century American Poets, edited by John Ciardi, 1950 [p. 170]
Kipling, Auden & Co: Essays and Reviews 1935-1964 (1980)

Source: Real Presences (1989), I: A Secondary City, Ch. 3 (p. 9).

Source: Illuminations: Essays and Reflections

Source: Redemption Ark (2002), Chapter 25 (p. 452)

260, 5th October 1820. Translation by Michael Caesar and Franco D'Intino et al. [Farrar, Straus and Giroux, 2010, ISBN 9780141194400], p. 177
Zibaldone (1898)

Slavery (1835)