大生要旨云∶大寒之后，必有阳春，天地之道，不蛰封则不发育也。今人之无子者，
往往勤于色欲，岂知施泄无度，阳精必薄，纵欲适情，真气乃伤，妄欲得子，其能孕乎？夫
男象天主施，女象地主受，一施一受，其妊始成。今其所施，全非先天浓郁之气，不过
后天浇漓渣滓之物。纵使阴受可化，而实无阳施之用矣。故有心种子者，毋伤于思虑，毋
耗其心神，毋意驰于外而内虚，毋志伤于内而外驳，毋以酒为色媒，毋以药而助火，葆
精汇神，静养日久，及至阴阳交媾，两神相搏，其一点先天元真之气，勃勃生育之机，即
寓于情欲大动之时，万举而万当矣。《内经》云∶阴平阳秘，精神乃治，阴阳离决，精气
乃绝。《老子》曰∶必清必静，毋摇尔精。《人镜经》曰∶精气盛则生二男。谚云∶寡欲
多男子。历历名言，不特老而无子者，当奉为龟鉴，即壮年难子者，亦须尊为节符。寡
欲广嗣篇云∶世人无不急于生子，亦知生子之道，精气交媾，熔液成胎。故少欲之人恒
多子，且易育，气固而精凝也。多欲之人恒艰子，且易天，气泄而精薄也。譬之酿酒然，
斗米下斗水，则酒浓，且耐久，其质全也。斗米倍下水，则淡，三倍四倍，则酒非酒水非
水矣，其真元少也。今人夜夜淫纵，遍御外家婢，精气妄泄，邪火上升，邪火愈炽，真阳
愈枯，安能成胎？即侥幸生子，亦不能育，或殇于痘，或殇于惊。痘者热毒，惊者热风。毒
者，父母之真精不足。风者，父母之真气不固也。昔有人艰于子息，医者教以节欲静摄，
勿劳心神，心静则精不摇，神完则气不走。每妻经净，乃一交媾，否则各榻，如是半年，妻
果有娠。娠后即异榻，足月之后，果生男子，后来天花只三五粒。彼求子而广蓄婢外家，不
知节欲，岂有当哉？
《大生要旨》中说：大寒之后，必然会有温暖的春天，这是天地运行的规律，如果不经过冬眠封藏，就不能生长发育。现在那些没有子女的人，往往在性生活上过于勤勉，哪里知道射精没有节制，阳精必然稀薄；放纵欲望以顺从私情，真气就会受到损伤，妄想得到子嗣，怎么可能怀孕呢？男子象征天，主施予；女子象征地，主接受。一施一受，妊娠才能形成。现在他们所施予的，完全不是先天浓郁的气，不过是后天浇漓渣滓之物。即使女方能够接受并转化，但实际上已经失去了阳气施予的作用了。所以有心求子的人，不要因为思虑而受伤，不要耗损心神，不要让意念驰骛于外而导致内部空虚，不要让意志内伤而导致外部驳杂，不要把酒当作色欲的媒介，不要用药物来助长火气。保养精气，汇聚精神，安静调养日久，等到阴阳交媾，两神相搏，那一点先天的元真之气，勃勃的生育之机，就蕴含在情欲大动的时候，这样做万举万当。《内经》说：阴气平和，阳气固秘，精神就能正常；阴阳分离决裂，精气就会断绝。《老子》说：必须清静，不要动摇你的精气。《人镜经》说：精气旺盛则生男孩。谚语说：寡欲则多男子。这些名言历历在目，不仅是年老无子的人，应当奉为借鉴，就是壮年难以得子的人，也必须尊为节制的准则。《寡欲广嗣篇》说：世人没有不急于生子的，也知道生子之道在于精气交媾，熔液成胎。所以少欲的人常常多子，而且容易养育，因为气固而精凝。多欲的人常常难以得子，而且容易夭折，因为气泄而精薄。这就好比酿酒一样，一斗米加一斗水，酒就浓，而且耐久，其质地完整。一斗米加倍加水，酒就淡，加三倍四倍，就不是酒也不是水了，其真元就少了。现在的人夜夜淫乱放纵，遍御外面的婢女，精气妄泄，邪火上升，邪火越炽盛，真阳就越枯槁，怎么能成胎？即使侥幸生下孩子，也不能养育，或者死于天花，或者死于惊风。痘是热毒，惊是热风。毒，是因为父母的真精不足。风，是因为父母的真气不固。过去有人难以得子，医生教他节制欲望，安静摄养，不要劳伤心神，心静则精不摇，神完则气不走。每当妻子月经干净后，才进行一次交媾，否则分床睡觉，这样过了半年，妻子果然怀孕。怀孕后就分床，足月之后，果然生了男孩，后来出天花只有三五粒。那个人求子却广泛蓄养婢女和外面的女人，不知道节制欲望，这怎么恰当呢？
The *Da Sheng Yao Zhi* (Essentials of Great Life) states: After the severe cold, there must be a warm spring; this is the way of heaven and earth. If one does not hibernate and seal [energy], development cannot occur. Nowadays, those who are childless often engage in sexual activity with diligence. Do they not know that excessive ejaculation leads to thin seminal essence? Indulging desires to gratify emotions injures the True Qi (vital energy). Can one who vainly wishes for offspring conceive? The man corresponds to Heaven, which bestows; the woman corresponds to Earth, which receives. Only through this bestowing and receiving can pregnancy begin. What is currently bestowed is entirely lacking the dense Qi of the Pre-Heaven (innate constitution); it is merely the dregs of the Post-Heaven (acquired constitution). Even if the Yin can transform it, the function of Yang's bestowal is truly lost. Therefore, those who wish for offspring should not injure themselves with overthinking, nor deplete their Shen (Spirit). Let not the mind wander outward causing internal emptiness, nor let the will be injured inwardly causing external disorder. Do not use alcohol as an intermediary for lust, nor use drugs to assist fire. Preserve Jing (Essence), gather Shen, and nourish quietly for a long time. When Yin and Yang unite, and the two Shens collide, that single point of Pre-Heaven Yuan Zhen Qi (Primordial True Energy), the vigorous mechanism of life, resides at the moment of great sexual arousal. In this way, every action will be appropriate. The *Nei Jing* (Inner Canon) says: "When Yin is peaceful and Yang is secreted/stable, Spirit governs; when Yin and Yang separate and rupture, Essence and Qi perish." Laozi said: "Be clear and quiet; do not shake your Jing." The *Ren Jing Jing* (Mirror Classic of Humanity) says: "When Jing and Qi are abundant, two sons are born." The proverb says: "Few desires yield many men." These clear words serve not only as a mirror for the old who have no children but also as a rule of restraint for the young who struggle to conceive. The chapter *Gua Yu Guang Si Pian* (Chapter on Few Desires and Numerous Heirs) states: People are eager to have children, knowing that conception relies on the union of Jing and Qi, melting into a fetus. Thus, those with few desires often have many children and raise them easily because their Qi is solid and Jing is condensed. Those with many desires struggle to conceive and their children often die young because Qi leaks and Jing is thin. It is like brewing wine: one dou of rice with one dou of water yields strong, durable wine with complete quality. One dou of rice with double the water yields weak wine; triple or quadruple water makes it neither wine nor water, for its primordial essence is diminished. Today, people indulge nightly, engaging with many external concubines, leaking Jing wantonly. Evil Fire rises; the fiercer the evil fire, the more withered the True Yang becomes. How can a fetus form? Even if a child is luckily born, they cannot be raised, dying either from smallpox or fright. Smallpox is heat-toxin; fright is wind-heat. Toxin arises from insufficient True Jing of parents; wind arises from unconsolidated True Qi of parents. Once, someone struggled with infertility. A physician advised him to restrain desires and practice quiet preservation, not to labor the heart-mind. When the heart is quiet, Jing does not shake; when Shen is complete, Qi does not flee. He engaged in intercourse only once after his wife's menstruation ceased; otherwise, they slept in separate beds. After half a year, his wife conceived. They separated beds during pregnancy. At full term, a son was born, who later had only three or five spots of smallpox. That man sought heirs by hoarding concubines and women outside, yet did not know how to restrain desires. Was this appropriate?