The Hourglass is a reminder not only of time's quick flight, but also of the dust to which we must at last return.
The Hourglass is a device possessed of a healthy attitude towards time: the sand falling through a few grains at a time repeats itself, never landing in the same arrangement, but even on inspection appearing close enough.
An Hourglass is a time-keeping device with more moving parts than the most complicated of watches.
The Hourglass is a reminder not only of Time's quick flight, but concurrently also of the dust to which we shall at last return.
15 concepts in this pillow book.