1. Introduction to the law of contract -- 2. Consensus -- 3. Formation of the contrat: the offer -- 4. Formation of the contract: the acceptance, moment of formation of the contract, place of formation of the contract and negotiations between contracting parties -- 5. Pacta de contrahendo -- options and rights of preference -- 6. Conflicting rights -- 7. Error (mistake) -- 8. Common error -- 9. Misrepresentation -- 10. Duress or metus (force or fear) -- 11. Undue influence -- 12. One general ground for rescission of a contract -- 13. Performance must be possible -- 14. Conclusion of the contract, its performance and its object must be lawful -- 15. The performance must be lawful -- 16. The object of the agreement must be lawful: justa causa -- 17. The consequences of illegality -- 18. Formal requirements -- 19. The parties to the agreement -- 20. The contents and interpretation of the agreement -- 21. Terms which qualify the obligation -- 22. Performance -- 23. Breach of contract -- 24. Mora debitoris -- 25. Mora creditoris -- 26. Positive malperformance -- 27. Repudiation -- 28. Prevention of performance -- 29. Remedies on the ground of breach of contract -- 30. The exceptio non adimpleti contractus -- 31. Rescission -- 32. Damages -- 33. Penalty clauses -- 34. The exceptio doli -- 35. The transfer of claims: cession -- 36. The termination of obligations -- 37. The termination of obligations (continued) -- 38. The termination of obligations (continued) -- 39. The principles underlying the law of contract and the Constitution.