Both Uses of

ephemeral

in

Call It Sleep

But still the phrases flickered on as ephemeral and capricious as before, as thwarting-the abrupt and fragmentary glimpses of a figure passing behind the brief notches of parapets.†
Book 2 *

ephemeral = existing only for a short time

As he climbed the swart stairs, stained with every upward step by shallow, rocking lantern-light, he muttered, and this he did not so much to populate the silence with ephemeral, figment selves, but to follow the links of his own slow thinking, which when he failed to hear, he lost: "And wut?†
Book 4