Last June Freemasonry celebrated worldwide its 300th anniversary as an organisation, although Freemasonic Lodges have existed, as historically proven, since at least the 1600’s. There are over 5 million members in the world today who made an oath never to reveal its secrets. What are its tenets and what does it stand for? Is there any relationship between Freemasonry and Humanism? For an answer to these and other questions, Helio Da Costa, a Freemason for 32 years, a Humanist and a descendant from Freemasons on both sides of his family will reveal some aspects of this institution. Helio is one of our board members.