Poem 1: Alone
I stood on the soft shingle of sand where the sea swept my legs with salt and wet.
Alone I walked under the arch of night where stars fluttered between treetops in the wind.
And a long memory it is I have how the sea and the night were kind.
Carl Sandburg

Poem 2:
Alone
I’ve listened: and all the sounds I heard
Were music—wind, and stream, and bird.
With youth who sang from hill to hill
I’ve listened: my heart is hungry still.
I’ve looked: the morning world was green;
Bright roofs and towers of town I’ve seen;
And stars, wheeling through wingless night.
I’ve looked: and my soul yet longs for light.
I’ve thought: but in my sense survives
Only the impulse of those lives
That were my making. Hear me say
‘I’ve thought!’—and darkness hides my day.
Siegfried Sassoon
Which theme is expressed by one poem, but not the other?

Solitude is a hard to endure when it reminds people of how alone they are in the world.
Solitude awakens the senses to the beauty of nature and returns the spirit to a state of peace.
Solitude is a painful state that wears down the soul and therefore should be avoided.
Solitude can be intensely rewarding if you avoid analyzing your life while you're alone.