Natural science will in time incorporate into itself the science of man, just as the science of man will incorporate into itself natural science: there will be one science. – Karl Marx
Religion is the impotence of the human mind to deal with occurrences it cannot understand. – Karl Marx
The history of all previous societies has been the history of class struggles. – Karl Marx
The writer must earn money in order to be able to live and to write, but he must by no means live and write for the purpose of making money. – Karl Marx
No matter how full a reservoir of maxims one may possess, and no matter how good ones sentiments may be, if one have not taken advantage of every concrete opportunity to act, ones character may remain entirely unaffected for the better. With good intentions, hell proverbially is paved. – William James