The Monist Advocates the Philosophy of Science
which is an application of the scientific method to philosophy.
The old philosophical systems were mere air castles (constructions of abstract theories,) built in the realm of pure thought. The Philosophy of Science is a systematisation of positive facts; it takes experience as its foundation, and uses the systematised formal relations of experience (mathematics, logic, etc.) as its method. It is opposed on the one hand to the dogmatism of groundless a priori assumptions, and on the other hand to the scepticism of negation which finds expression in the agnostic tendencies of to-day.