The challenge in the atheism configures itself in a big clamour of modern times to the practice and testimony of Christian faith. The new face of atheist confession emerges inside a society marked by social and human challenges, such as; religious terrorism, the ethnics and nations conflits, the question of life s diginity and the construction of justice and peace. From the understanding of the atheist thinking of Richard Dawkins this work intent to elucidate the neoatheism concept, with its objectives, arguments and proposals of man and society. The new atheism presented by thinkers such as André Comte-Sponville, Daniel Dennet, Sam Harris, Michel Onfray, and the Dawkins himself, brings new questions and interpretations and challenges, both faith and science for. It s from the effective dialogue between faith and the new atheism, that christianity will be able, reviewing its speech and practice, answer correctly and positively to such challenges. Nevertheless the desires of the society without religion, formed for the majority of new atheists, seems to be a ephemeral ideal. What we can note it s the desire compose on the society with a new metalanguage in opposition to the lack of human dignity and the growing violence of this days. Or goal, therefore, it s to propose a consistent dialogue between Christian faith and the neo-atheísm, to build a language of solidarity, of coexistence and fraternity, and, fowarding to an authentic realization of the human being.