It's Because It's Autum Poem by Hiroshi Satow

he's usually a happy guy
though he was always in gloom and grief when young
it's because he loved Baudelaire and Rimbaud,
Nietzsche and Freud
good old days, indeed

now he reads nothing
he wakes up smiling
he works joking
and he goes back home whistling

and now for some unknown reason
he's sad for the first time in 20 years
maybe it's because it's autumn
it's getting colder and colder day by day
leaves are falling down more and more
and the sun's setting earlier and earlier
now he's in gloom and grief
misses his prime of time
and dearly knows what sorrow is all about

which makes him all the happier
since he now knows for sure he still is capable of lamentation
as he was in his youth
a basis for empathy and humanity