“The sin of bourgeois patriotism was to confound a certain economic form with the national. It connected two things that are entirely different. Forms of the economy, however firm they may seem, are changeable. The national is eternal. If I mix the eternal and the temporal, the eternal will necessarily collapse when the temporal collapses. This was the real cause for the collapse of liberal society. It was rooted not in the eternal, but in the temporal, and when the temporal declined it took the eternal down with it. Today it is only an excuse for a system that brings growing economic misery. That is the only reason why international Jewry organizes the battle of the proletarian forces against both powers, the economy and the nation, and defeat them.”

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.

As quoted in The Anchor Book of Latin Quotations: with English translations‎ (1990) by Norbert Guterman, p. 375
Disputed

Source: The Limits of Evolution, and Other Essays, Illustrating the Metaphysical Theory of Personal Ideaalism (1905), Appendix D: Reply to a Review in the New York Tribune, p.412-3

Systematic Theology (1951–63)
Context: A theological system is supposed to satisfy two basic needs: the statement of the truth of the Christian message and the interpretation of this truth for every new generation. Theology moves back and forth between two poles, the eternal truth of its foundation and the temporal situation in which the eternal truth must be received. Not many theological systems have been able to balance these two demands perfectly.

Source: The Story of My Life (1903), Ch. 21

Source: As Sure as the Dawn

Bob Jones University Commencement (8 May 1999)

Source: 1840s, The Concept of Anxiety (1844), p. 85

Variant: We look not at the things which are what you would call seen, but at the things which are not seen. For the things which are seen are temporal. But the things which are not seen are eternal.
Source: A Wrinkle in Time