“One may certainly admire man as a mighty genius of construction, who succeeds in piling an infinitely complicated dome of concepts upon an unstable foundation, and, as it were, on running water. Of course, in order to be supported by such a foundation, his construction must be like one constructed of spiders' webs: delicate enough to be carried along by the waves, strong enough not to be blown apart by every wind.”

Sermon 19:2 on the New Testament http://www.newadvent.org/fathers/160319.htm
Sermons
Context: You wish to be great, begin from the least. You are thinking to construct some mighty fabric in height; first think of the foundation of humility. And how great soever a mass of building one may wish and design to place above it, the greater the building is to be, the deeper does he dig his foundation.

Statement of 1917; as quoted in Teaching at the Bauhaus (2000) by Rainer Wick and Gabriele Diana Grawe, p. 231
1916 - 1920

Rex v. Inhabitants of Caverswall (1758), Burrow (Settlement Cases), 465.

Source: De architectura (The Ten Books On Architecture) (~ 15BC), Book II, Chapter VIII, Sec. 8

As We May Think (1945)
Context: Babbage, even with remarkably generous support for his time, could not produce his great arithmetical machine. His idea was sound enough, but construction and maintenance costs were then too heavy. Had a Pharaoh been given detailed and explicit designs of an automobile, and had he understood them completely, it would have taxed the resources of his kingdom to have fashioned the thousands of parts for a single car, and that car would have broken down on the first trip to Giza.

Jorge Luis Borges, "Baruch Spinoza", as translated in Spinoza and Other Heretics, Vol. 1: The Marrano of Reason (1989) by Yirmiyahu Yovel
A - F

Ah Yom
Lyrics, The Empyrean (2009)

Niemand kann dir die Brücke bauen, auf der gerade du über den Fluß des Lebens schreiten mußt, niemand außer dir allein.
“Schopenhauer as educator,” § 3.1, R. Hollingdale, trans. (1983), p. 129
Untimely Meditations (1876)

Pt 1, Ch. 4 http://www.resologist.net/lo104.htm
Lo! (1931)
Context: If human thought is a growth, like all other growths, its logic is without foundation of its own, and is only the adjusting constructiveness of all other growing things. A tree can not find out, as it were, how to blossom, until comes blossom-time. A social growth cannot find out the use of steam engines, until comes steam-engine-time. For whatever is supposed to be meant by progress, there is no need in human minds for standards of their own: this is in the sense that no part of a growing plant needs guidance of its own devising, nor special knowledge of its own as to how to become a leaf or a root. It needs no base of its own, because the relative wholeness of the plant is relative baseness to its parts. At the same time, in the midst of this theory of submergence, I do not accept that human minds are absolute nonentities, just as I do not accept that a leaf, or a root, of a plant, though so dependent upon a main body, and so clearly only a part, is absolutely without something of an individualizing touch of its own.
It is the problem of continuity-discontinuity, which perhaps I shall have to take up sometime.