The aim of this paper is to sketch the major aspects of
Gestaltpsychologie: Wertheimer‘s factors, global v. local factors,
isomorphism, auto-organisation, Prägnanz as singularity and as a
tendency towards stability. While Gestaltpsychologie as a school no
longer exists, its lesson is yet seminal and can inspire many
developments of contemporary cognitive psychology. Few examples are
here illustrated: geometric psychology, non linear systems (mainly
synergetics), and computational gestalts.