Not in proofs by formal logic but in the reality of consciousness was the certainty of God.
"formal logic" is too technical for any but well prepared students.
The rules of formal logic express simply the properties of all possible classifications.
Physiological questions are not to be settled by formal logic.
formal logic or dialectic, as cultivated by Abaelard for example, appears as an exception.
For reasons of formal logic, too, the idea of progress in the universe is unthinkable.
What was true in formal logic tended to be absorbed in the correlationist theories.
Does formal logic involve any general assumption as to the real existence of the terms of propositions?
While formal logic aims to put itself outside of philosophy, metaphysical logic would usurp the place of philosophy.
Curiously enough this conclusion is fully confirmed by formal logic.