“(…) long time, dragging on, which is missing to mislay, and afflicts him (a young man) to such an extent that he feels like in captivity.”
“Sakhalin Island” by Anton Chekhov
We do not appreciate time, because it is not possible to touch the time or perceive it with other senses.
Time is a value of exceptional price. In order to come round to this assertion, you should think about children. The children will be happy, when you give them your time and attention, rather than toys.
Time is a wealth but we wasting it foolishly.