Costa, M.R.N. and José de lima, R. 2024. Saint Thomas Aquinas and philosophical psychology: on the method of investigation of the first principle of life. Princípios: Revista de Filosofia (UFRN). 31, 66 (Dec. 2024). DOI:https://doi.org/10.21680/1983-2109.2024v31n66ID36066.