“The aim of man is beyond the temporal — in the serene region of the everlasting Present.”

A fragment of Miller's unfinished book on D. H. Lawrence, originally published in the London literary journal Purpose.
Source: Tropic of Capricorn (1939) "Creative Death", p. 2

Book I, Ch. 26
Attributed
Variant: The most certain sign of wisdom is cheerfulness.

Source: Dictionary of Burning Words of Brilliant Writers (1895), P. 274.

Source: The Moon and Sixpence (1919), Ch. 21, p. 79

Here in this region beyond thought the human spirit actively soars
The Exemplar, The Life of the Servant

August 22, 1936 Fire
Diary entries (1914 - 1974)

Works, VII, 17.
Context: The great thing however is, in the show of the temporal and the transient to recognize the substance which is immanent and the eternal which is present. For the work of Reason (which is synonymous with the Idea) when considered in its own actuality, is to simultaneously enter external existence and emerge with an infinite wealth of forms, phenomena and phases — a multiplicity that envelops its essential rational kernel with a motley outer rind with which our ordinary consciousness is earliest at home. It is this rind that the Concept must penetrate before Reason can find its own inward pulse and feel it still beating even in the outward phases. But this infinite variety of circumstances which is formed in this element of externality by the light of the rational essence shining in it — all this infinite material, with its regulatory laws — is not the object of philosophy.... To comprehend what is, is the task of philosophy: and what is is Reason.

Review of Hunger and Love by Lionel Britton, in The Adelphi (April 1931)
Context: To the well-fed it seems cowardly to complain of tight boots, because the well-fed live in a different world-a world where, if your boots are tight, you can change them; their minds are not warped by petty discomfort. But below a certain income the petty crowds the large out of existence; one's preoccupation is not with art or religion, but with bad food, hard beds, drudgery and the sack. Serenity is impossible to a poor man in a cold country and even his active thoughts will go in more or less sterile complaint.

p. 136