The aim of the present paper is to show that Catholicism is not a closed segment of contemporary philosophy but rather a rich source of traditions and developments which are alive even today and can help to understand our philosophical situation and contribute to a renaissance of influential philosophy in our culture. In more detail, I shall focus on the importance of Catholic philosophy in its history and present day situation as part and parcel of our general philosophical traditions. I offer a list of models describing the possible relationships between Catholicism and philosophy. I identify the unity model as a model connected to phenomenological realism; and I will detail the important contribution of Josef Seifert to such a phenomenol...