GENERAL PROVISIONS
Art. 1318. There is no contract unless the following requisites concur:
(1) Consent of the contracting parties;
(2) Object certain which is the subject matter of the contract;
(3) Cause of the obligation which is established. (1261)
SECTION 1. – Consent
Art. 1319. Consent is manifested by the meeting of the offer and the acceptance upon the thing and the cause which are to constitute the contract. The offer must be certain and the acceptance absolute. A qualified acceptance constitutes a counter-offer.
Acceptance made by letter or telegram does not bind the offerer except from the time it came to his knowledge. The contract, in such a case, is presumed to have been entered into in the place where the offer was made. (1262a)
Art. 1320. An acceptance may be express or implied. (n)
Art. 1321. The person making the offer may fix the time, place, and manner of acceptance, all of which must be complied with. (n)
Art. 1322. An offer made through an agent is accepted from the time acceptance is communicated to him. (n)
Art. 1323. An offer becomes ineffective upon the death, civil interdiction, insanity, or insolvency of either party before acceptance is conveyed. (n)
Art. 1324. When the offerer has allowed the offeree a certain period to accept, the offer may be withdrawn at any time before acceptance by communicating such withdrawal, except when the option is founded upon a consideration, as something paid or promised. (n)
Art. 1325. Unless it appears otherwise, business advertisements of things for sale are not definite offers, but mere invitations to make an offer. (n)
Art. 1326. Advertisements for bidders are simply invitations to make proposals, and the advertiser is not bound to accept the highest or lowest bidder, unless the contrary appears. (n)
Art. 1327. The following cannot give consent to a contract:
(1) Unemancipated minors;
(2) Insane or