
The first key to wisdom is constant and frequent questioning, for by doubting we are led to question and by questioning we arrive at the truth. - Peter Abelard
Social-political philosophy
Philosophy of language and logic
Philosophy of biology
Aesthetics
Ethics
Philosophy of cognitive science, aesthetics, philosophy of mind
Social-political philosophy, ethics
Paul Ricoeur
Philosophy of mind, metaphysics
Philosophy of science, history and philosophy of physics
Ethics