The one thing which we seek with insatiable desire is to forget ourselves, to be surprised out of our propriety, to lose our sempiternal memory, and to do something without knowing how or why; in short, to draw a new circle. Nothing great was ever achieved without enthusiasm.
Source: wiktionary
Why not sempiternal / Thou and I? Our vernal / Brightness keeping, / Time outleaping: / Passed the hodiernal!
Source: wiktionary
As they moved through the shop, which existed in a sempiternal twilight by what light filtered through the grimy windows that had not been washed for years, Rita paused to say, "You said there was some good stuff among this junk. Point me out something you wouldn't be glad to give away to get rid of it."
Source: wiktionary
[I]n filmdom, the sempiternal question continues: Can a male and female actor be just ‘good friends’?
Source: wiktionary