独学而无友，则孤陋而寡闻 "Learning alone without exchanges with others will lead to ignorance."

独协大学 Dokkyo University

独立思考和学习 independent thinking and learning

独协医科大学 dokkyo university school of medicine

学会孤独 Learn to be lonely

姫路独协大学 Himeji Dokkyo University

姬路独协大学 Himeji Dokkyo University

独立自主学习 learn individually and independently

独特型网络学说 idiotype network theory ; idiotypic network theory