The school-boy doesnt force himself to learn his vocabularies and rules altogether at night, but knows that be must impress them again in the morning.
Hermann EbbinghausThe constant flux and caprice of mental events do not admit of the establishment of stable experimental conditions.
Hermann EbbinghausThe amount of detailed information which an individual has at his command and his theoretical elaborations of the same are mutually dependent; they grow in and through each other.
Hermann Ebbinghaus