The sacred theory of the Earth, Volume 2 (of 2) : $b Containing an account of the original of the Earth, and of all the general changes which it hath already undergone, or is to undergo, till the consummation of all things.

Divine Providence and Rational Design

Burnet's central argument is that the Earth's history, from creation to its ultimate consummation, is not a series of arbitrary events but a divinely ordained, rational progression. He seeks to demonstrate God's wisdom and foresight through the natural mechanisms he proposes for the Earth's transformations, suggesting that even catastrophic events like the Deluge are part of a grand, logical plan. This theme reflects the Enlightenment's desire to find order and reason in the natural world, even within a theological framework.

The History and Transformation of the Earth

This is the most direct and explicit theme. Burnet presents a comprehensive, though speculative, history of the Earth, from its initial formation, through its major geological catastrophes (especially the Deluge), to its predicted future transformations and ultimate renewal. He is among the first to conceive of Earth having a deep and dynamic history, challenging the static view prevalent in much earlier thought. His focus on the Earth's physical changes establishes him as a precursor to modern geology.