Dr. Aloisius H. Louie is a mathematical biologist. His 1981 PhD thesis topic was on the abstract formulation of categorical system theory in biology. Robert Rosen, then Killam Professor of Biomathematics at Dalhousie University (Halifax, Nova Scotia, Canada), was his mentor. His other degrees are BSc (1978, Honours Mathematics and Biology) and MA (1979, Pure Mathematics) from the University of Western Ontario (London, Ontario, Canada). Dr. Louie's research subjects have encompassed abstract formulations, mathematical modelling, and computer simulations of various natural and physical phenomena, including dynamic behaviour of protein molecules, enzyme-substrate recognition, processes of irreversible thermodynamics, human-pollutant interactions, the cell biology of senescence, and electromagnetics. His premier interest, however, remains the epistemological aspects of mathematical biology.