The article discusses possible foundations and difficulties in a fully-fledged Christian ethical doctrine constructing. The author considers as an initial step the so-called existential impulse, which motivates emerging of a behavioral strategy exceeding the limits of present existence with its common antithesis of directive or situational morals. However, the dual nature of this existential impulse activity requires admitting the fundamental problem of the content and the boundaries of morality field. It also requires to consider the very possibility of constructing a unified values system as well as overcoming the ressentiment factor through Christian Revelation.
Keywords: existential impulse, moral boundaries, values, ressentiment.