Poesy fairy

A man who walked a riverbank
Found a fairy writing a book:
‘Behold the gift of poesy!’, proclaimed the man
‘I shall learn it!’
The fairy replied:
Who learns poesy
It is only forgotten
Around the time we proclaim
Fairies don’t exist.
Thereupon she vanished…
‘Alas!’, cried the man
‘It is easier to believe in fairies
Than to write poetry!’
And the man went on his way.