John Playfair Quotes

7 quotes in 248 categories

Every river appears to consist of a main trunk, fed from a variety of branches, each running in a valley proportional to its size, and…
The Author of nature has not given laws to the universe, which, like the institutions of men, carry in themselves the elements of their own…
[To] explain the phenomena of the mineral kingdom ... systems are usually reduced to two classes, according as they refer to the origin of terrestrial…
To trace the series of these revolutions, to explain their causes, and thus to connect together all the indications of change that are found in…
Amid all the revolutions of the globe, the economy of Nature has been uniform, ... and her laws are the only things that have resisted…
Thus we conclude, that the strata both primary and secondary, both those of ancient and those of more recent origin, have had their materials furnished…
The mind seemed to grow giddy by looking so far into the abyss of time.

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