Historically, secular humanism has been in conflict with religious thought in the academic and social spheres. This article supports the thesis that in modern times pseu-dosciences and pseudoscientific thinking are a threat to the humanist project, comparable to religious fundamen-talism. To prove it, the concept of Secular Humanism and how it is threatened by religious fundamentalism is explai-ned. This is followed by the definition of what pseudos-ciences are and what pseudoscientific thinking is. Subse-quently, the way how pseudosciences threaten the secular (...) humanist project is described. The conclusion states that pseudoscientific thought and religious fundamentalism are equally dangerous for social coexistence. (shrink)