“Only I discern
Infinite passion, and the pain
Of finite hearts that yearn.”

Entry in Tolstoy's Diary http://www.linguadex.com/tolstoy/chapter1.htm (1 November 1910)
Context: God is the infinite ALL. Man is only a finite manifestation of Him.
Or better yet:
God is that infinite All of which man knows himself to be a finite part.
God alone exists truly. Man manifests Him in time, space and matter. The more God's manifestation in man (life) unites with the manifestations (lives) of other beings, the more man exists. This union with the lives of other beings is accomplished through love.
God is not love, but the more there is of love, the more man manifests God, and the more he truly exists...
We acknowledge God only when we are conscious of His manifestation in us. All conclusions and guidelines based on this consciousness should fully satisfy both our desire to know God as such as well as our desire to live a life based on this recognition.

Young Adventure (1918), The Quality of Courage
Context: I stumbled, slipped... and all was gone
That I had gained. Once more I lay
Before the long bright Hell of ice.
And still the light was far away.
There was red mist before my eyes
Or I could tell you how I went
Across the swaying firmament,
A glittering torture of cold stars,
And how I fought in Titan wars...
And died... and lived again upon
The rack... and how the horses strain
When their red task is nearly done... I only know that there was Pain,
Infinite and eternal Pain.
And that I fell — and rose again.

Source: The Humans

Hawthorne and His Mosses (1850)

Source: Peace of Soul (1949), Ch. 4, p. 53

By Still Waters (1906)

Fellini on Fellini (1976) edited by Anna Keel and Christian Strich; translated by Isabel Quigly.
Variant: There is no end. There is no beginning. There is only the passion of life.

Source: Nature

George Boole, An Investigation of the Laws of Thought (1854) Ch. 13. Clarke and Spinoza, pp. 216-217. https://books.google.com/books?id=DqwAAAAAcAAJ&pg=PA216
Context: It is not possible, I think, to rise from the perusal of the arguments of Clark and Spinoza without a deep conviction of the futility of all endeavors to establish, entirely à priori, the existence of an Infinite Being, His attributes, and His relation to the universe. The fundamental principle of all such speculations, viz. that whatever we can clearly conceive, must exist, fails to accomplish its end, even when its truth is admitted. For how shall the finite comprehend the infinite? Yet must the possibility of such conception be granted, and in something more than the sense of a mere withdrawal of the limits of phænomal existence, before any solid ground can be established for the knowledge, à priori, of things infinite and eternal.