Mathematics and the nature of knowledge—an introductory essay

1-11

The miraculous left hand—on Leonardo da Vinci and the search for a common understanding of man and nature

15-25

Relationships between the social and the natural sciences

27-41

Changes of the knowledge system and their implication for the formative stage of scholars

experiences in the natural sciences

43-52

Remarks on the science and technology of language

53-65

How mathematics is rooted in life

67-74

Tarski, truth, and natural languages

77-88

Formal semantics, geometry, and mind

89-108

On what there is—infinitesimals and the nature of numbers

109-134