Franz Brentano was born. A celebrated thinker and influential writer on the philosophical foundations of psychology, Brentano is best known for introducing the concept of intentionality and for developing original theories on a range of topics including consciousness, emotion, judgment and logic.

Brentano's major works include 'The Psychology of Aristotle' (1867), 'Psychology from an Empirical Standpoint' (1874) and 'The Classification of Mental Phenomena' (1911).