Here is another poem from Clark Ashton Smith (CAS) that was never published in his lifetime. Likewise, it is not available on The Eldritch Dark, so here's the complete text:
Two things alone are good: to love, and to forget
All else but love and love's divine forgetfulness.
Vain is the world, and vain is all thine old distress.
All tears but love's are idle, idle is all regret.
There are no other sins than these: to put love by,
Or let the world be lord and arbiter of love:
Give me thy lips, thy heart, and all the sweets thereof--
And we shall drain the draught of Lethe ere we die.
It's a minor poem from CAS' large collection of love poems, and I can't say I'm surprised that he chose not to publish this one.