"It is difficult to get a man to understand something when his salary depends on his not understanding it." -Upton Sinclair (https://www.oxfordreference.com/dis

"It is difficult to get a man to understand something when his salary depends on his not understanding it." -Upton Sinclair (https://www.oxfordreference.com/display/10.1093/acref/9780191826719.001.0001/q-oro-ed4-00010168 https://www.oxfordreference.com/display/10.1093/acref/978019...)