The philosophy of Karl Popper

The philosophy of science

The two fundamental problems in the theory of knowledge

The role of theories

On the problem of a theory of scientific method

The problem of the empirical basis

Corroboration

Realism and the concept of truth

Verisimilitude

Probability

The social philosophy

Knowledge, decision, responsibility

The poverty of historicism

The open society

The "positivist dispute"

Natural necessity

Determinism versus indeterminism

The body-mind problem and the third world.