R. Nechunia ben Hakanah says: If one accepts upon himself the yoke of Torah, there is removed from him the yoke of sovereignty [the burden of the king and his officers] and the yoke of derech eretz [the toil and tribulation of earning a livelihood (for his work is blessed)]. And if one divests himself of the yoke of Torah [i.e., if he says: "The yoke of Torah is too burdensome for me and I cannot bear it,"] there is placed upon him the yoke of sovereignty and the yoke of derech eretz.