 Subsequent to the 1912 essay and the 1915 lectures, the influence of the language of phenomenology becomes discernible in the works of Ortega through the usage of such terms as “apodictic appearance”, philosophy as “a science”, and philosophy “as a science without supposition” (Obras, I: 318–19; VII: 335). Since 1914, Ortega remarked in his work The Idea of Principle in Leibnitz and the Evolution of Deductive Theory (1947), which was published posthumously in 1958, a