Foundation of the Nativity

Definition

This is Valens's rule that every forecast must be calibrated to the overall standing of the chart it belongs to — hypothesis tēs geneseōs (Greek ὑπόθεσις τῆς γενέσεως, "the basis of the nativity"). The same planet behaves quite differently in an exalted chart than in a modest one, so the astrologer must first take the measure of the whole before judging any part. It is a methodological premise, not the calculated Lot of Basis.

In Tradition

Valens opens with this discipline: weigh each chart's standing and rank first, and fit the action of the stars and signs to that. The reading of an average chart and an exalted one should not come out the same. Each star and sign has both an ordinary and an extreme range, for good or ill, and benefics and malefics even trade roles according to the chart's overall basis. He distinguishes four trajectories. There are the always-fortunate, who are not harmed by malefics, and the always-humble, who are not helped by benefics. There are also those who rise from middling beginnings to prominence, and those who fall from great fortune to low rank.

In Practice

Before reading any single placement, gauge the chart's overall basis and likely trajectory — is this a life pitched high or low, rising or falling? Set every later judgment against that backdrop. The same configuration that lifts a modest chart may barely register in an exalted one, and a benefic or malefic can swing in force with the chart's general rank. Note plainly that this is the premise behind the work, not the Lot of Basis. The Lot is a computed point; the foundation of the nativity is the framing-discipline that tells you how loudly any factor should speak.

Historical Origin

The discipline is established by Vettius Valens, Anthology Book IV (chapter 16; in Mark Riley's translation, pp. 84-85). The text directs the astrologer to weigh each nativity's standing and rank before all else. It notes that benefics and malefics swap roles according to the chart's overall basis, and sets out the four life-trajectory typologies.

Etymology

Origin: Greek. Meaning: the basis or underlying premise of the nativity.

Further Reading

• Vettius Valens, Anthology
• Chris Brennan, Hellenistic Astrology