Juridical capacity is the capacity of being part of a legal relationship, that is, to enjoy rights and to be burdened by duties. Art. 1 of the Civil Code states that juridical capacity is attributed to the human being from the moment of birth and it lasts until the moment of the person’s death. The law can set forth special juridical incapacities for single legal relationships (people can enter most labour contracts only when they are 15 years old and couples younger than 16 cannot marry). The capacity to act (art. 2 c.c.) is the capacity to manage and dispose of rights, through contracts and other juridical acts labeled “negozi giuridici” under Italian Law (such as marriage, last wills, contracts, etc.). “Negozi giuridici” according to traditional doctrine are defined as “declarations of will to which the law attaches effects consistent with the will expressed”. According to a more modern view, “negozi giuridici” are rather seen like acts of self-regulation of private interests. The purpose of the category is to build up a general discipline for the main “juridical acts” (as to the capacity to act, the interpretation, the conditions the parties can introduce in the act, its invalidity, etc.). Nevertheless, its importance is mainly theoretical and serves, above all, didactical purposes. Therefore, its “use” will be very low during the following classes. The capacity to act is acquired when a person becomes 18 years old: before this age all juridical acts are carried out by one or both parents, who exercise the so-called “responsabilità genitoriale” (see art. 315 ff. c.c.). If parents cannot exercise this power, minors are represented by a tutor appointed by the Court. Parents or tutors are legal representatives of the minor: They can make in the name of the minor all acts of ordinary administration, while acts of extraordinary administration must be authorized by the Court. The dominant view classifies as acts of extraordinary administration those that imply a transfer of assets and not their simple management. Art. 320, Paragraph 3, c.c. lists (among the former) sale contracts, lease contracts lasting more than 9 years, loans made to borrow money, mortgages given in favor of third parties, acceptances of inheritance and of gifts, settlements of disputes. The capacity to act can be partially attributed to a minor who is 16 or 17 years old, when he or she marries, becoming a “minore emancipato” (see art. 392 ff. c.c.). An emancipated minor can carry out all acts of ordinary administration alone, while the acts of extraordinary administration require the participation of his curator (the spouse if 18 years old, otherwise a person appointed by the Court, if possible one the parents). Acts of extraordinary administration must be also authorized by the Court (as for other minors). The capacity to act can be totally paralyzed in the interest of the person who becomes unable to manage her assets with the deprivation procedure (“interdizione”). This situation occurs when a person is severely impaired on an habitual basis in her mental ability to make decisions (art. 414 ff. c.c.). The person deprived of her capacity to act is represented by a tutor appointed by the Court. The capacity to act can be partially paralyzed with the disability procedure (“inabilitazione”), when the person: a)suffers from a mental impairment not so severe as the ones leading to deprivation; b)abuses of alcohol or drugs; c)is very prodigal and then creates a risk of serious economic losses to herself or her family; d)has been deaf of blind since her birth or a young age, and has not been sufficiently trained to overcome the impairment. The tutor totally substitutes himself in the expression of the will of the person (as happens in the case of the minor of age). The curator only assists the disabled person for the acts going beyond the ordinary administration (as happens in the case of the emancipated minor). In these cases too, the acts of extraordinary administration must be authorized by the Court. (But see art. 427, Para 1, for exceptions to the said rules, enacted under the influence of the “support administration” procedure). The Law no. 6/2004 introduced into the Civil Code the support administration procedure (“amministrazione di sostegno”). This new procedure is for cases of impairment or physical or mental handicaps hindering the person in the management of her assets (see art. 404 ff. c.c.). Support’s Administration is much more flexible than the deprivation and the disability procedures. First, deprivation and disability are applied or revoked through a judgment issued at the end of a full and formal lawsuit, while support administration is left to a simple decree of the Court that can easily be enacted and modified. Second, the decree states for which specific acts the participation of the administrator is necessary and is therefore much more flexible (and adaptable). Third, the administrator is appointed for a limited period of time after which there is a new assessment of the situation. The violation of the said rules brings about the voidability of the juridical act at stake (usually, but not necessarily, a contract). Therefore, its effects can be removed by an action brought by the person who takes care of the interests of the incapable person, by the latter when the cause of incapability has been ceased or by her heirs or her beneficiaries. Nevertheless, art. 1426 c.c. sets forth an exception for the minor of age who has entered a contract simulating to be of age. All the cases listed so far are about legal incapacity to act, as they are permanent limitations of that capacity. What if a minor is mature enough to manage his interests or a person deprived of her capacity to act has a moment of clearness of mind? What if a person of age and not deprived of her capacity is not capable of understanding the consequences of her actions and to carry out them voluntarily? In the last case there is only a natural incapacity to act, which leads to the voidability of: a) contracts, whether they seriously damage the author of the act and the counterpart is in bad faith (art. 428 c.c.); b) unilateral acts inter vivos having an economic content whether they seriously damage the author of the act (art. 428 c.c.); c) juridical acts other than the ones under b) and c) when expressly stated by the law (see art 120 for marriage, art. 591 for last wills acts and art. 775 for gifts).