 …the philosophy that we now possess clutches to its breast certain tenets with which (if we look into it carefully) they want wholly to conceive men that nothing difficult, nothing with real power and influence over nature, should be expected from art or human effort; […] These things, if we examine them minutely, tend wholly towards a wicked circumscription of human power and an intentional and unnatural despair which not only confounds the presages of hope but breaks every nerve and spur of industry, and throws away the chances afforded by experience itself—while all they care about is that their art be considered perfect, expending their effort to achieve the most foolish and bankrupt glory of having it believed that whatever has not been found out or understood so far cannot be found out or understood in the future. (OFB XI, 141) 