Wilhelm Haller
Wilhelm "Willi" Haller (born 1935; died 2004) was a Swabian businessman and social entrepreneur and is considered the father of Flexitime of Interflex Datensysteme.
Read more about Wilhelm Haller: Life, Bibliography
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“To him who looks upon the world rationally, the world in its turn presents a rational aspect. The relation is mutual.”
—Georg Wilhelm Friedrich Hegel (1770–1831)