Philosophical pessimism is not a state of mind or a psychological disposition, but rather it is a worldview or ethic that seeks to face up to the distasteful realities of the world and eliminate irrational hopes and expectations (such as the Idea of Progress and religious faith) which may lead to undesirable outcomes. Ideas which prefigure philosophical pessimism can be seen in ancient texts such as the Dialogue of Pessimism and Ecclesiastes (which maintains that everything is hevel, literally 'vapor' or 'breath', but could also mean 'senseless' and 'absurd'.)In Western philosophy, philosophical pessimism is not a single coherent movement, but rather a loosely associated group of thinkers with similar ideas and a family resemblance to each other. In Pessimism: Philosophy, Ethic, Spirit, Joshua Foa Dienstag outlines the main propositions shared by most philosophical pessimists as "that time is a burden; that the course of history is in some sense ironic; that freedom and happiness are incompatible; and that human existence is absurd."Philosophical pessimists see the self-consciousness of man as bound up with his consciousness of time and that this leads to greater suffering than mere physical pain. While many organisms live in the present, humans and certain species of animals can contemplate the past and future, and this is an important difference. Human beings have foreknowledge of their own eventual fate and this "terror" is present in every moment of our lives as a reminder of the impermanent nature of life and of our inability to control this change.