In matters of science, curiosity gratified begets not indolence, but new desires.

The globe of this earth … [is] … not just a machine but also a organised body as it has a regenerative power.

The past history of our globe must be explained by what can be seen to be happening now. No powers are to be employed that are not natural to the globe, no action to be admitted except those of which we know the principle.

In matters of science, curiosity gratified begets not indolence, but new desires.

The result, therefore, of this physical enquiry is that we find no vestige of a beginning, no prospect of an end.

There is no vestige of a beginning, no prospect of an end.

If an organised body is not in the situation and circumstances best adapted to its sustenance and propagation, then, in conceiving an indefinite variety among the individuals of that species, we must be assured, that, on the one hand, those which depart most from the best adapted constitution, will be most liable to perish, while, on the other hand, those organised bodies, which most approach to the best constitution for the present circumstances, will be best adapted to continue, in preserving themselves and multiplying the individuals of their race.