However we select from nature a complex [of phenomena] using the criterion of simplicity, in no case will its theoretical treatment turn out to be forever appropriate (sufficient).... I do not doubt that the day will come when [general relativity], too, will have to yield to another one, for reasons which at present we do not yet surmise. I believe that this process of deepening theory has no limits.
Poets and men of action differ: the former yield to their feelings in order to reproduce them in lively colors, and therefore judge only ex post facto; the latter feel and judge at one and the same time.
Public opinion is a mysterious and invisible power, to which everything must yield. There is nothing more fickle, more vague, or more powerful; yet capricious as it is, it is nevertheless much more often true, reasonable, and just, than we imagine.
How often has not the parallel been drawn and the golden age of the Roman Empire, when the external brilliancy of life likewise dazzled the eye, notwithstanding that the social diagnosis could yield no other verdict than 'rotten to the very core'?
If a great country yields to a small country, it will conquer the small country. If a small country yields to a great country, it will be conquered by the great country.
APHORISM, n. Predigested wisdom. The flabby wine-skin of his brain Yields to some pathologic strain, And voids from its unstored abysm The driblet of an aphorism. "The Mad Philosopher," 1697