"The principle of recognition of evil under all its guises is at the basis of the true education of man."

"The course of evolution is to a greater integration of similarly functioning ganglia."

"The general tendency of evolution is from structure to function, from bondage to freedom of the individual elements."

"Science is the description of phenomena and the formulation of their relations."

"Psychology is the science of psychic states both as to content and form, regarded from an objective standpoint, and b…"

"The psycho-physiological hypothesis is both inductively and deductively the sine qua non of the science of psychology."

"The man of genius whether as artist or thinker requires a mass of accidental variations to select from and a rigidly …"

"Not purpose but chance is at the heart of mental life."

"The fact that psychology postulates an external material world and studies it in so far as it comes to be reflected i…"

"Suggestibility varies as the amount of disaggregation, and inversely as the unification of consciousness."