It’s no joke — today, April 1, is Apple’s 40th anniversary. Founded by Steve Jobs, Steve Wozniak and Ronald Wayne on April 1, 1976, Apple has transformed from scrappy upstart to one of the most powerful — and valuable — companies in the world.

To commemorate the 40th anniversary, Apple is flying a special pirate flag outside of its campus in Cupertino.

ce6r45cuaaahylssss

According to original Mac team member Andy Hertzfeld, Jobs opened the retreat with three sayings:

Real artists ship

It’s better to be a pirate than join the navy

Mac in a book by 1986

The flag Apple is flying above its campus Friday is most certainly not the original pirate flag (that disappeared sometime in 1984 or 1985), but it carries the same imagery of the original.