Edmund Husserl Quote

The term 'scepticism' is commonly used with some vagueness. Ignoring its popular sense, we find that philosophical theories are called 'sceptical' if they try to limit human knowledge considerably and on principle, and especially if they remove from the sphere of possible knowledge wide fields of real being, or such especially precious sciences as metaphysics, natural science, or ethics as a rational discipline.

Logical Investigations (1900)