The concept of modes of thinking applied to a language manifests the mental structure of the speakers who have created that language in history. In this book I present seven modes of thinking, namely: the primordial thinking of the merchants in the Mediterranean, the substantive thinking of the Greeks, the primordial Germanic thinking of the so-called Old English, the thinking of the absolute categories of Latin, the individual thinking of Spanish, the experiential thinking of Andean Spanish, and postmodernist thinking.The ways of thinking and the consequent way of conceiving what we call things are created in the linguistic act, more specifically in the intellective operation of determination. For this reason I introduce at the end of the book the scheme of the intellective operations that give rise to the linguistic act according to the linguistics of saying.