Pi philosopher

One of the 20th century's most influential philosophers of science

Known for his rejection of the classical inductivist views on the scientific method in favour of empirical falsification, and for founding the LSE's Department of Philosophy

According to him, a theory in the empirical sciences can never be proven, but it can be falsified, meaning that it can (and should) be scrutinized with decisive experiments. Popper was opposed to the classical justificationist account of knowledge, which he replaced with "the first non-justificational philosophy of criticism in the history of philosophy", namely critical rationalism

Also known for his vigorous defence of liberal democracy and the principles of social criticism that he believed made a flourishing open society possible

His political thought resides within the camp of Enlightenment rationalism and humanism