Pi the number that never gives up.

Pi the number that never gives up, is always growing...it is a motivation for life, it never gives up...the number pi is philosophical...I like it because it helps us to be constant in everything we do. .It reminds me of when I was at the University where I studied Computer Engineering, I saw it everywhere, calculus for example... that's why it's like my friend, I appreciate the PI number very much. It is so incredible but in the number Pi there are all the dates of our birthdays.
My favorite formula is that of the Volume of a sphere as I show it in the image