He was tired after the day's work, and was soon dead to the world.

It is easy to get disheartended and tired if you are so much for others without actually enjoying it.

I am lonely only when I am overtired, when I have worked too long without a break, when for the time being I feel empty and need filling up.

He was tired when he got back from the climb.

This is just the humancondition, especially so for the busy (often tired) knowledge worker of today.