every kind of ethical education is positive,and much welcome.otherwise,everything we try to build and create here,no use and sense.we must learn mechanism,and build better enviroenment for future discovering.this ebook is one contribution for this universal idea.we must support and encoruage that people.
tehcnicaly,ebook is a digest resource-very usefull
i will put this ebook in sign-in memorandum :),and then the other one,and then the other...
plesure to post
