sentences:  After the murder of Caesar, Brutus, while staying at Athens, also attended the lectures of Cratippus.Although Cicero had a high opinion of the knowledge and talent of Cratippus, his philosophical opinions are unknown, apart from allusions to his opinions on divination, on which he seems to have written a work.Cicero states that Cratippus believed in dreams and supernatural inspiration () but that he rejected all other kinds of divination.