This text aims to convey some of the interest and charm of Modal logic, and to put a reader new to the subject in a position to have an informed opinion as to its applicability to each of several areas of Philosophical concern (belief, knowledge, obligation ...) in which the merits of a Modal approach\' have been controversial. he main focus, for these purposes, is on normal Modal logics, though some attention is given to the non-normal side of the picture..
This text aims to convey some of the interest and charm of Modal logic, and to put a reader new to the subject in a position to have an informed opinion as to its applicability to each of several areas of Philosophical concern (belief, knowledge, obligation ...) in which the merits of a Modal approach\' have been controversial
