What does it mean?
If you enjoyed it, the time wasn't really wasted. Relaxing and having fun have value too.
Who said it?
Marthe Troly-Curtin: French-born writer and novelist, active in the early 20th century. Source: Phrynette Married (1912).
Time– Marthe Troly-Curtin, Phrynette Married (1912)
“Time you enjoy wasting is not wasted time.”