In the twentieth century, numerous claims appeared to abandon traditional catholic apologetics as a system of defending the faith against opponents, which argues with adversaries, fights their theses, condemns the unrighteous and is an art of converting to faith. They were so strong that international conventions were organised in order to exchange thoughts and jointly reflect on the shape of apologetics, appropriate to the challenges faced by the faith in the second half of the 20th century. Debates have led to withdraw from traditional apologetics and change it into fundamental theology as a positive science, capable of engaging in dialogue with people of other faiths and even with non-believers. In order to continue the discourse on the shape of apologetics as a science practiced on the border of human experience and faith, in 1965 „The Concilium” was established, an international scientific periodical, published twice a year, in six languages. The first ten editions of this semi-annual, however, proved that fundamental theology did not find a formula it had been looking for decades. In the same time, in Poland a different postulate was raised to renew apologetics as a non-theological science, protecting theology from the trap of falling into fideism and constituting a kind of bridge between theology and non-theological sciences. Due to isolation of Poland as the state of communist block this unique idea did not become the subject of a broader reflection.