Personally, I've read these ancient greek stories when I was very young 5-12 years old. And when I re-read it again nowadays, I found that most of its morals present in my very deep mind. Athough I forgot the story but didn't forget the lesson behind.

The best way to raise a stable minded child, to inculcate the wisdom and the Intelligence in your children's minds —un conscious mind— is reading moral stories with for them, and this book will be the best choice for me to read to my children.