Ueda Shizuteru

Ueda's philosphical standpoint is characterized

1. by a severe critique of the modern understanding of the self as subject;
2. by a logic of locus (basho no ronri) which he develops in reference to Heidegger's topological ontology; and
3. by an endeavor to lay a philosophical foundation for the soteriology of Zen practice.

These three characteristics find their paradigmatic formulation in Ueda's core concepts of "being-in-the-twofold-wordl" and "slef as not-self". (Steffen Döll in JaCP 120)