“All lost things are in the angels' keeping, Love;
No past is dead for us, but only sleeping, Love.”
At last.
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Helen Hunt Jackson 10
Novelist, poet, writer, activist 1830–1885Related quotes
A Thanatopsis, reported in Bartlett's Familiar Quotations, 10th ed. (1919).

Sādhanā : The Realisation of Life http://www.spiritualbee.com/spiritual-book-by-tagore/ (1916)
Context: In love all the contradictions of existence merge themselves and are lost. Only in love are unity and duality not at variance. Love must be one and two at the same time.
Only love is motion and rest in one. Our heart ever changes its place till it finds love, and then it has its rest. But this rest itself is an intense form of activity where utter quiescence and unceasing energy meet at the same point in love.
In love, loss and gain are harmonised. In its balance-sheet, credit and debit accounts are in the same column, and gifts are added to gains. In this wonderful festival of creation, this great ceremony of self-sacrifice of God, the lover constantly gives himself up to gain himself in love. Indeed, love is what brings together and inseparably connects both the act of abandoning and that of receiving.

“The past is the only dead thing that smells sweet.”
Edward Thomas, "Early One Morning" from Poems (1917) http://www.richmondreview.co.uk/library/thomas04.html#five
Misattributed

"Sleep (A Woman Speaks)", line 1, p. 98.
The Monitions of the Unseen (1871)