Is it possible to speak of innatism when we think of the St. Thomas Aquinas’ philosophy? Is it possible that the Neotomists – all “sons” of Buzzetti and Liberatore – wanted to present an incomplete St. Thomas? Is it possible that Rosmini was right in believing that St. Thomas had to be understood in his own spirit? In this short essay (chapter) I try to examine the innatist problematic, albeit attempting not exhausting the topic, but suggesting to scholars a useful path of investigation, so that neither St. Thomas nor Rosmini will be interpreted in a fragmentary way and with both scholars’ integrity being maintained.