We have received nothing less than an invitation to fly.
 Thirteen is a fascinating number. It is the seventh number in the Fibonacci series. Thirteen is the smallest prime number that can be expressed as the sum of the squares of two prime numbers i.e. 13 = 2 ^ 2 + 3 ^ 2. It is the only prime number which, when you reverse the digits also forms a prime number (31.) “Eleven plus two” is an anagram of “twelve plus one.” More info on the mysterious number thirteen at these sites: http://www.wisdomportal.com/Numbers/13.html
The reverse of the square of 13 is the same as the square of the reverse of 13, i.e. 13 ^ 2 = 169; on reversing 169, we get 961 which is the same as the square of reverse of 13 i.e. 31 ^ 2 = 961.
 The number thirteen is associated with the feminine because the body of the human female has thirteen orifices. The human male, and therefore patriarchy, is associated with the number twelve, as the body of a human male has twelve orifices. Biologically, the more specialization in the animal, the higher up in the evolutionary chain that animal is determined to be. That pretty much puts the human female at the top. Don't blame me, I don't make up these rules.
 The American Constitution is based largely upon the constitution of the Iroquois nation, a balanced system that had proven successful for 500 years. However a fateful difference, is that the US did not include the essential safety feature of the Iroquois’ checks and balances: that in order to wage war, the blessing and permission of the Grandmothers’ Council was required.