आदर्शवाद (Idealism) का दार्शनिक सिद्धांत मुख्य रूप से किस पर आधारित है?

According to Swami Vivekananda, the most important aim of education is the:

The concept of the mind as an empty slate ('tabula rasa') at birth is traditionally traced back to which ancient philosopher, and later popularized by John Locke?