266. It is not lawful for one who is in a necessary occasion of sin to neglect means that are adapted to preserve him from the moral contagion by which he is surrounded; for to neglect spiritual safeguards and protections in such a case is to refuse to resist temptation (see 252 sqq.). The means that should be used depend on circumstances, but prayer and firm resolves to avoid sin should be employed in every case. 267. The gravity of the sin committed by one who freely remains in an occasion of sin, or who does not use the requisite spiritual helps in a necessary occasion, depends on various factors: (a) if the sin to which he is tempted is light, he does not sin gravely; (b) if the sin to which he is tempted is serious, and the occasion is proximate, he sins gravely; (c) if the occasion is remote, he sins venially. 268. The Motives of Sin.--The purposes that lead men to sin can be considered as follows: (a) according to the predominant vices of individual men, which are for them motives for committing their other sins (particular motives)--e.g., a man whose chief sin is unbelief and who is led by it to intolerance, blasphemy, despair, etc.; (b) according to the natural relationship and sequence between sins themselves, by which some are usually the motives for others _in all men (general motives)_. 269. The predominant individual motives for sin are as numerous as the different characters of those addicted to sin, and hence it is impossible to classify them. The predominant general motives for sin, on the contrary, can be assigned according to the principal goods that most often move or repel with wills of all who commit sin, as follows: (a) goods of the soul, such as praise and honor, inordinately pursued (the vice of pride); (b) goods of the body, inordinately desired (the views of lust and gluttony); (c) goods that are external, unduly loved (the vice of avarice); (d) one’s own good, not sufficiently wished (the vice of sloth); (e) the neighbor’s good, not suffiviently desired (the vices of envy and anger). 270. The seven vices mentioned above are usually calle the capital, or head vices, since the other sins are directed by them just as the other parts of the body are directed by the head. 271. Among the seven capital vices there are two that have principality over the others: (a) in the intention of the sinner the motive force that impels to sin is always some inordinate desire of his own personal excellence, and hence pride is the beginning of all sin; (b) in the execution of the sin the opportunity for satisfying every base desire is afforded by money, and thus avarice is the root of nourishment of all evils. 272. The Results of Sin.--There are two kinds of sins from the viewpoint of origin: (a) original sin, which is inherited from Adam by all his descendants (except Christ and the Blessed Virgin); (b) actual sin, which is committed by the personal will of each sinner.