What is true "smartness"?

What is true "smartness"?

Regular price
¥1,430
Sale price
¥1,430
Regular price
Sold out
Unit price
per 
Tax included.

What is true "smartness"? / Author: Takashi Saito

Click here for details of the book *Seibundo Shinkosha official website
https://www.seibundo-shinkosha.net/book/general/20964/