Bernardo Motta was born in Lisbon in 1976.
He is married and has three children.
He has a degree in Electrical and Computer Engineering (Control and Robotics) from Instituto Superior Técnico (2000), in Lisbon.
He wrote a historical study that explains the fraud of the Priory of Sion, entitled "Do enigma de Rennes-le-Château ao Priorado de Sião", published in Lisbon in 2005. Between 2005 and 2007 he gave several talks across Portugal to present results of his work, following the controversy raised by Dan Brown's book, “The Da Vinci Code”, which is based on the mystifications of the Priory of Sion.
Around 2007, his interests turned to History of Science and Philosophy of Science.
In 2011-2012, he prepared and taught a Course on Christianity and Science at the request of the Patriarchate of Lisbon.
Between 2013 and 2015 he taught the same course to students at Instituto Superior Técnico who attended Master's Degrees in Mathematics and Physics.
In 2016, he gave two talks at Instituto Superior Técnico in the cycle of conferences on Christianity and Science: one on Science in the Middle Ages and another on the impact of the Roman Inquisition on Science.
Between 2015 and 2017 he wrote the book “O Milagre do Sol segundo as testemunhas oculares”, edited and published by Principia / Lucerna, which collects 150 eyewitness testimonies of the phenomenon that occurred on October 13th 1917. In his book, he both defends the miracle thesis and a meteorological explanation for what was observed.