SINCLAIR, UPTON : It is difficult to get a man to understand something when his salary depends upon his not understanding it. (Upton Sinclair, Jr., U.S. writer, 1878-1968)

SINCLAIR, UPTON : It is difficult to get a man to understand something when his salary depends upon his not understanding it. (Upton Sinclair, Jr., U.S. writer, 1878-1968)

SINCLAIR, UPTON : It is difficult to get a man to understand something when his salary depends upon his not understanding it. (Upton Sinclair, U.S. reformer, writer, and recipient of the Pulitzer Prize for Fiction, 1878-1968)

SINCLAIR, UPTON : It is difficult to get a man to understand something when his salary depends upon his not understanding it. (Upton Sinclair, U.S. novelist and reformer, 1878-1968)