The book contains 30 principles to be followed to make friendship instead enmity, to win deals instead of quarrel and misunderstanding.
All these principles are like rules that are required for life. One must follow them. Not even a single principle looks like outdated.
Since this book was written in a century before, I felt like : all of them are being followed in a day-to-day activity. Even my granny behaves the same way as given here.
This book is required for the one who doesn't know how to talk with strangers, how to bargain, how to be friendly and for those who started to become a leader.
If you are good at negotiating, making friends, understanding them, convincing people, then this book is of no use. Skip this book