Lewin distinguished between explanation of natural events, which emphasized inner essences and categories, and explanation of natural events, which emphasized external causation and dynamics of forces.

Aristotle; Galileo.

Lewin distinguished between ARISTOTLE'S explanation of natural events, which emphasized inner essences and categories.

GALILEO explanation of natural events, which emphasized external causation and dynamics of forces.

Aristotle defines a nature as "a source or cause of being moved and of being at rest in that to which it belongs primarily"

answer; primary source information;