The second approach concerns the evident creation of the substances of existing things, such as the creation of life in inanimate matter, the five senses, and intellect. Let us call this the argument from creation.

The first approach rests on two premises:

The first is that all existing things in this world are suited to human existence.

The second is that this suitability necessarily comes from an agent who intends and wills it, since it cannot have come about by chance.

As for their suitability to human existence, certainty about this is attained through the evidence that night and day, the sun and moon, are suited to human existence, as are the four seasons and the place where human beings live, namely, the earth.

Likewise, the suitability of many animals, plants, and inanimate things to human beings is evident, as is that of many particular things, such as rain, rivers, seas, and what is borne by