When the green woods laugh
with the voice of joy,
And the dimpling stream runs
laughing by;
When the air does laugh with
our merry wit,
And the green hill laughs with
the noise of it;

When the meadows laugh
with lively green,
And the grasshopper laughs
in the merry scene;
When Mary, and Suasn, and Emily,
With their sweet round mouths sing,
"Ha, ha, he!"

When the painted birds laugh
in the shade,
Where our table with cherries
and nuts is spread:
Come live, and be merry,
and join with me
To sing the sweet chorus
of "Ha, ha, he!"

William Blake was an English poet and painter. Through he hardly gained any recognition during his time, he is now considered one of the most important writers in English.

This poem is an invitation to all to join with nature and to sing and laugh. When the whole world around us, including the woods and the hills, is laughing and being merry, there is only one thing for us to do and that is to join in and laugh together in chorus. The poem with its tone of joy and merriment is meant to pass on the laughing song.

1. dimpling: the small waves that appear in the stream are being compared to the dimples that appear on some people's cheeks when they smile
2. our merry out: our fun and happiness 
3. chorus: something that a lot of people say at the same time