There were the days when you peered into your self, into the secret places of your head, and what you saw there made you fear with horror. And then, next day, you didn't know what to make of it, you couldn't interpret the horror you had glimpsed the day before. Yes, you know what evil costs.
Man can will nothing unless he has first understood that he must count on no one but himself; that he is alone, abandoned on earth in the midst of his infinite responsibilities, without help, with no other aim than the one he sets himself, with no other destiny than the one he forges for himself on this earth.
Jean-Paul Sartre (1905 - 1980)
Source: L'Etre et le Néant (Being and Nothingness), 1943