Negligence
This chapter traces the history of negligence in tort. The role of fault in the action of trespass vi et armis is somewhat speculative, since the relevant facts were hidden from courts by the plea of Not Guilty. But the concept of inevitable accident seems to be predicated on negligence. Negligence is more visible in actions on the case, though the earliest examples were contractual in essence. The first signs of a distinct tort of negligence, where there was no contract or custom imposing liability, appear in the seventeenth century, and in the next century there emerges a general principle that everyone must take reasonable care not to injure his neighbour. The duty of care was gradually enlarged between the eighteenth century and the present, especially with the removal of obstacles connected with the principle volenti non fit injuria and with the old notion that trespass would not lie for words.