It is impossible for someone to dispel his fears about the most important matters if he doesn't know the nature of the universe but still gives some credence to myths. So without the study of nature there is no enjoyment of pure pleasure.
EpicurusWhatsoever causes no annoyance when it is present, causes only a groundless pain in the expectation. Death, therefore, the most awful of evils, is nothing to us, seeing that, when we are, death is not come, and, when death is come, we are not. It is nothing, then, either to the living or to the dead, for with the living it is not and the dead exist no longer.
EpicurusDeath is nothing to us: for after our bodies have been dissolved by death they are without sensation, and that which lacks sensation is nothing to us. And therefore a right understanding of death makes mortality enjoyable, not because it adds to an infinite span of time, but because it takes away the craving for immortality.
Epicurus