Biology and the science of mind

Biology is the study of living things.  Science is the gathering of verifiable, reproducible knowledge about the world. Done well, science matches its tools to the problem at hand, so that its discoveries can be meaningful.  Psychiatry is the branch of medicine dealing with thought, feeling, and behavior:  the content and organization of subjective  experience.  The term biological psychiatry has been used to denote a scientific approach to psychiatry,  incorporating what is known about the biology of behavior.  The term is sometimes used to refer narrowly to biochemistry and quantified measures of behavior; yet psychiatry and behavior become empty, if meanings and feelings are omitted from the field of observation.  To be truly biological, psychiatry must integrate all relevant  disciplinary perspectives: