The entity in this book is neither soul nor body. It is that which has been forgotten since Greek classicism, that which can be perceived without the help of sight or touch, in shock, in - for example - fear, pain, hunger, thirst, revulsion, lust, rapture, freshness, tiredness, when feelings of affect are awakened, in sensations of movement, in the direction of gaze. Using new concepts dealing with expansion and dynamics, this forgotten entity is brought out of the shadows and examined with the aid of examples. This work examines the role of the "Leib", according to its meaning, in the structure of the individual person, in the feeling of feelings, in art, history, space, time, soul, body. The book ends with a sketch of the different ways in which the "Leib" has been addressed, from the ideas of Homer up to the present.