Full Idea
The threat of boredom is the dissolution of the evaluative dimension of our life.
Gist of Idea
Boredom destroys our ability to evaluate
Source
John Kekes (The Human Condition [2010], 09.1)
Book Reference
Kekes,John: 'The Human Condition' [OUP 2010], p.187
A Reaction
This seems right. If nothing is interesting, then there is no scale of values left, except perhaps 'of possible interest to other people'.