What does the word internal mean?

Usage examples for internal

  1. If I see much of that girl, it will upset my internal economy. – The Keeper of the Door by Ethel M. Dell
  2. What you do, you succeed in; that is why I ask you if we differ on the question of internal struggles, if the hero ought to have any or if he ought not to know them. – The George Sand-Gustave Flaubert Letters by George Sand, Gustave Flaubert Translated by A.L. McKensie
  3. From these considerations it is evident, that in the natural world almost all are capable of being joined together as to external, but not as to internal affections, if these disagree and are apparent. – The Delights of Wisdom Pertaining to Conjugial Love by Emanuel Swedenborg