No effect can precede its cause. All bachelors are unmarried. All bachelors are misogynists. All cats are mammals. There is an external world.
Light travels in straight lines in a vacuum.
The standard metre is one metre long. Motion is continuous, i.e. a moving body can t pass from a to z without passing through the points in between. If A occurs before B, B does not occur before A. Judgment is the bringing of intuitions under concepts. Compounds consist of fixed proportions of their constituent elements. Indexing and abstracts from books and over 400 journals.