William Butler Yeats (pronounced /ˈjeɪts/; 13 June 1865 – 28 January 1939) was an Irish poet and dramatist, and one of the foremost figures of 20th century literature. A pillar of both the Irish and British literary establishments, in his later years Yeats served as an Irish Senator for two terms. He was a driving force behind the Irish Literary Revival, and along with Lady Gregory and Edward Martyn founded the Abbey Theatre, serving as its chief during its early years. In 1923 he was awarded the Nobel Prize in Literature for what the Nobel Committee described as "inspired poetry, which in a highly artistic form gives expression to the spirit of a whole nation." He was the first Irishman so honored. Yeats is generally considered one of the few writers who completed their greatest works after being awarded the Nobel Prize; such works include The Tower (1928) and The Winding Stair and Other Poems (1929).

Yeats was born and educated in Dublin but spent his childhood in County Sligo. He studied poetry in his youth and from an early age was fascinated by both Irish legends and the occult. Those topics feature in the first phase of his work, which lasted roughly until the turn of the 20th century. His earliest volume of verse was published in 1889 and those slow-paced and lyrical poems display debts to Edmund Spenser, Percy Bysshe Shelley, and the Pre-Raphaelite poets. From 1900, Yeats' poetry grew more physical and realistic. He largely renounced the transcendental beliefs of his youth, though he remained preoccupied with physical and spiritual masks, as well as with cyclical theories of life.

'Easter, 1916'

By WILLIAM BUTLER YEATS

I have met them at close of day

Coming with vivid faces

From counter or desk among grey

Eighteenth-century houses.

I have passed with a nod of the head

Or polite meaningless words,

Or have lingered awhile and said

Polite meaningless words,

And thought before I had done

Of a mocking tale or a gibe

To please a companion

Around the fire at the club,

Being certain that they and I

But lived where motley is worn:

All changed, changed utterly:

A terrible beauty is born.

• *

That woman's days were spent

In ignorant good-will,

Her nights in argument

Until her voice grew shrill.

What voice more sweet than hers

When, young and beautiful,

She rode to harriers?

This man had kept a school

And rode our wingèd horse;

This other his helper and friend

Was coming into his force;

He might have won fame in the end,

So sensitive his nature seemed,

So daring and sweet his thought.

This other man I had dreamed

A drunken, vainglorious lout.

He had done most bitter wrong

To some who are near my heart,

Yet I number him in the song;

He, too, has resigned his part

In the casual comedy;

He, too, has been changed in his turn,

Transformed utterly:

A terrible beauty is born.

• *

Hearts with one purpose alone

Through summer and winter seem

Enchanted to a stone

To trouble the living stream.

The horse that comes from the road,

The rider, the birds that range

From cloud to tumbling cloud,

Minute by minute they change;

A shadow of cloud on the stream

Changes minute by minute;

A horse-hoof slides on the brim,

And a horse plashes within it;

The long-legged moor-hens dive,

And hens to moor-cocks call;

Minute by minute they live:

The stone's in the midst of all.

• *

Too long a sacrifice

Can make a stone of the heart.

O when may it suffice?

That is Heaven's part, our part

To murmur name upon name,

As a mother names her child

When sleep at last has come

On limbs that had run wild.

What is it but nightfall?

No, no, not night but death;

Was it needless death after all?

For England may keep faith

For all that is done and said.

We know their dream; enough

To know they dreamed and are dead;

And what if excess of love

Bewildered them till they died?

I write it out in a verse—

MacDonagh and MacBride

And Connolly and Pearse

Now and in time to be,

Wherever green is worn,

Are changed, changed utterly:

A terrible beauty is born.

explanation of poem