Hermann Ebbinghaus

On the basis of the familiar experience that that which is learned with difficulty is better retained, it would have been safe to prophesy such an effect from the greater number of repetitions.
On the basis of the familiar experience that that which is learned with difficulty is better retained, it would have been safe to prophesy such an effect from the greater number of repetitions.
Rotate quotes
basis  difficulty  effect  

These are some quotes by German author Hermann Ebbinghaus Psychologist, who lived between January 24, 1850 and February 26, 1909.