"We demand rigidly defined areas of doubt and uncertainty!"― Douglas Adams, The Hitchhiker's Guide to the Galaxy
"Human beings are not born once and for all on the day their mothers give birth to them, but ... life obliges them over and over again to give birth to themselves."― Gabriel García Márquez
"Perhaps I know best why it is man alone who laughs; he alone suffers so deeply that he had to invent laughter."― Friedrich Nietzsche