The organ of the memory was of crucial importance for Robert Hooke in his aim to improve natural history and the study of nature in general. As a mechanist he was careful to avoid the confident analogizing of his contemporaries, and he described his model in hypothetical form. However, he saw it as amenable to improvement—just as mechanically as the senses were augmented by the use of instruments. The close connection he made between a better memory mechanism and the task (...) of ‘perfecting’ the study of natural philosophy can be seen in a whole range of his activities. These included his discussion of the memory as an epistemological tool, his frequent use of devices such as lists and schemata for ordering aspects of nature and his personal memoranda. His diary, by acting as a stimulant to memory, should be seen as an integral part of his attempt to become a better natural philosopher. Both the act of daily inscription and the ordering of occurrences for effective later recall would improve his memory and his performance of his life's task as a philosopher of nature. (shrink)