Life swings like a pendulum backward and forward between pain and boredom

Life swings like a pendulum backward and forward between pain and boredom.

The two foes of human happiness are pain and boredom

The two enemies of human happiness are pain and boredom.

Boredom is just the reverse side of fascination: both depend on being outside rather than inside a situation, and one leads to the other.

Is boredom anything less than the sense of one's faculties slowly dying?