Commander Spock regrets the day Dr. McCoy said, “Permission to speak freely, sir,” and he replied, “I welcome it.”  McCoy has not stopped sharing his opinions since that time, and it’s very likely the doctor never will.

In other words, why Spock considers his constant headache his own fault.


the revolution is successful. but survival depends on drastic measures. your continued existence represents a threat to the well-being of society. your lives mean slow death to the more valued members of the colony. therefore, i have no alternative but to sentence you to death. 
your execution is so ordered, 
signed kodos, governor of 
Tarsus IV