"Inflection is the ideal genetic element of the variable curve or fold.
Inflection is the authentic atom, the elastic point. That is what Klee
extracts as the genetic element of the active, spontaneous line. It
testifies to his affinity for the Baroque and for Leibniz, and opposes
him to Kandinsky, a Cartesian, for whom angles are firm, for whom the
point is firm, set in motion by an exterior force." (Deleuze, The Fold)