LTAteizmas, visų pirma fundamentinės teologijos tema, kyla kaip požiūris į realybę / tikrovę (vok. Wirklichkeit, it. Efettualità). Kas yra realybė? Realybė ne tiek „nuogų“ faktų visuma, bet ta visuma, kurią subjektas supranta, kaip realiai egzistuojančią ir kuri tiesiogiai liečia patį subjektą. Iškyla sunkumas suvokti dvasinę, arba Dievo realybę. Kas tai yra? Ji nėra tiesiogiai, kaip jau minėta, patikrinama ir prieinama empiriniams mokslams. Empiriniai mokslai dažnai atsako į klausimą „kaip“ vyksta kas nors, bet negali atsakyti „kodėl“ vyksta tas kas nors. Iš požiūrio skirtingumo į tą tikrovę kyla ir ateizmas bei sekuliarizmas [Iš Įvado].
ENMost famous representatives of so called humanistic atheism Ludwig Feuerbach and Friedrich Nietzsche are analysed in the article. Their criticism of religion and their humanistic atheism allow to cognize the real God of Christianity from outside in. Their statements about God were faulty in their essence and therefore the failure of their ideology led gradually to the real perception of and belief in Christian God. This analysis will encourage perceiving the negative influence of post-modern and secularized world on the faith nowadays. There is no future without the faith in God. Authentic future and happiness are found in God the Trinity, who is love calling people into eternal life. These philosophers advocated the form of atheism which is called humanistic because the man is especially exalted instead of God. Nietzsche‘s superman seeks to take God‘s place: because everything is possible without God. Christianity invites to discover the realism of faith anew which allows to approach the faith apart from mythology, feelings, philosophy and so on. Only the Tripersonal God, who possesses a human face in Jesus Christ, can help a person not to limit perception of reality which always requires new and complicated efforts of searching and exploration.