In The Summer Of His Years lyrics

In the summer of his years
he would always smile.
He would laugh every day
if he was here to stay
for the summer of his years.

In the daylight of his dreams
he would save his tears.
He would always hear
when there was no one near
for the summer of his years.

Ah...
For the summer of his years.
For the summer of his years.
Ah, ah.

Submitted by Guest

What do you think is the meaning of In The Summer Of His Years by Bee Gees?