This is the final – fourth article of the series of texts focusing on problems of human transience. Hence, it is the culmination of focus on tribulations considered to be the rudimentary (as basic and commencing) aspects of our sense of security. And is considered to be an essential (fundamental) manifestation of the destruction of human existence. Death – transience of life, as a physical parameter and evolutionary mechanism is defined by the very laws of nature, which does not change and remains an inexhaustible source of human anxiety, and reflective understanding leading to consciousness of very immediate dimension of our mortality. Transience is a sign of ephemerality of existence and, therefore, it makes us realize the irrationality of human existence scattering in the shadow of death and dying. Consequently, the considerations contained in the article relate to the security as projection of being in manifestation of reflective thinking about worldliness, which does not relieve us of a dread of temporariness, when focused on short-lived and temporary life. From this point of view, the authors’ direct attention to philosophical statements and views, that belong to the existential rhetoric. For that reason, among the fascinating authors of the philosophy of life there are thinkers who are interested in the thanatological discourse. In the text authors are presenting the views of contemporary thinkers, with reference to the positions of Friedrich Nietzsche, Erasmus Majewski, Wilhelm Dilthey, Miguel de Unamuno, Nikolai Berdyaev, Lev Shestov, Carl Gustav Jung, Pierre Teilhard de Chardin, Karl Jaspers, Gabriel Marcel, Martin Heidegger, Albert Camus, Paul Ricoeur, Emmanuel Levinas, Vladimir Jankelevitch, Henryk Elezenberg, Józef Tischner, Jan Szczepański, Józef Bańka, Zygmunt Bauman and others – those who disseminate on the issues of the securitization, in its existential stratum.