Nothing exists from whose nature some effect does not follow

Nothing exists from whose nature some effect does not follow.

Only that thing is free which exists by the necessities of its own nature, and is determined in its actions by itself alone.

Nothing in the universe is contingent, but all things are conditioned to exist and operate in a particular manner by the necessity of the divine nature.

Those who wish to seek out the cause of miracles and to understand the things of nature as philosophers, and not to stare at them in astonishment like fools, are soon considered heretical and impious, and proclaimed as such by those whom the mob adores as the interpreters of nature and the gods. For these men know that, once ignorance is put aside, that wonderment would be taken away, which is the only means by which their authority is preserved.

All things excellent are as difficult as they are rare.