Article 21. Any person who wilfully causes loss or injury to another in manner that is contrary to morals, good customs or public policy shall compensate the latter for the damage.
Article 1157. Obligations arise from:
(1) Law;
(2) Contracts;
(3) Quasi-contracts;
(4) Acts or omissions punished by law; and
(5) Quasi-delicts. (1089a)
Article 1162. Obligations derived from quasi-delicts shall be governed by the provisions of Chapter 2, Title XVII of this Book, and by special laws. (1093a)
Article 2176. Whoever by act or omission causes damage to another, there being fault or negligence, is obliged to pay for the damage done. Such fault or negligence, if there is no pre-existing contractual relation between the parties, is called a quasi-delict and is governed by the provisions of this Chapter. (1902a)