“The beauty of things must be that they end.”

Proceedings against the Dean of St. Asaph (1783), 21 How. St. Tr. 875.

Source: The Bell Jar

"The First and the Last Catastrophe" in Popular Science Monthly (Vol. 7, (July 1875)
Context: It is a very serious thing to consider that not only the earth itself and all that beautiful face of Nature we see, but also the living things upon it, and all the consciousness of men, and the ideas of society, which have grown up upon the surface, must come to an end. We who hold that belief must just face the fact and make the best of it; and I think we are helped in this by the words of that Jew philosopher who was himself a worthy crown to the splendid achievements of his race in the cause of progress during the middle ages, Benedict Spinoza. He said, "The freeman thinks of nothing so little as of death, and his contemplation is not of death but of life." Our interest, it seems to me, lies with so much of the past as may serve to guide our actions in the present, and to intensify our pious allegiance to the fathers who have gone before us, and the brethren who are with us; and our interest lies with so much of the future as we may hope will be appreciably affected by our good actions now. Beyond that, as it seems to me, we do not know, and we ought not to care. Do I seem to say, "Let us eat and drink, for to-morrow we die?" Far from it; on the contrary, I say, "Let us take hands and help, for this day we are alive together."

RODIN, AUGUSTE. L'Art. Entretiens réunis par Paul Gsell, 1911

As written at on his blog http://wearethebest.wordpress.com/ts-satyan/.

Variant: The best and most beautiful things in the world cannot be seen or even touched. They must be felt with the heart.
Variant: The best and most beautiful things in the world cannot be seen, nor touched... but are felt in the heart.

On Marriage (1530)

In a letter to his son Lucien, 26 July 1892, as quoted in Letters of the great artists – from Blake to Pollock - , Richard Friedenthal, Thames and Hudson, London, 1963, p. 146
Quote of Pissarro, referring to a willow-painting of his former art-teacher Camille Corot
1890's

Source: The Waves