Internal relations are those relations that are intrinsic to the nature of one or more of the relata. They are a kind of essential relation, rather than an essential property. For example, an arc of a circle is internally related to the center of that circle in the sense that.

The article reviews logical and mathematical problems, which were the starting point of what is now known as “analytical philosophy”. The author proves that the moment of birth of analytical philosophy was Frege’s invention of a notation for quantifiers and va-riables in 1879. Another source of analytical philosophy was rather declaration than proof of certain philosophical beliefs by Moore and Russell during the 1990s. Generally, an analysis of these sources serves to clarify what analytical philosophy is and what it is (...) not, as well as why it appeared exactly at the beginning of the 20th century. (shrink)