Why only two witnesses ? Why doesnt everyone know the truth ? The truth of peace and love cant be that hard to know ? Can it ? And if so why is it that hard to know ?

I have pondered these questions my entire life...or at least as far back as i can remember. I have theories as to why ...some things i know very well. Other things i am still learning ..that is why i ask so many questions. As is my human right to do.