Edward Thorndike said this quote

It will, of course, be understood that directly or indirectly, soon or late, every advance in the sciences of human nature will contribute to our success in controlling human nature and changing it to the advantage of the common weal.

~ Edward Thorndike

Nowhere more truly than in his mental capacities is man a part of nature.

~ Edward Thorndike

Human beings are accustomed to think of intellect as the power of having and controlling ideas and of ability to learn as synonymous with ability to have ideas. But learning by having ideas is really one of the rare and isolated events in nature.

~ Edward Thorndike

Just as the science and art of agriculture depend upon chemistry and botany, so the art of education depends upon physiology and psychology.

~ Edward Thorndike