The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

"The past is always carried into the present by small things."

生活中闲言碎语在所难免，不必过分在意，做好自己即可。  

"The difference between correlation and causation is fundamental in empirical work."

"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."