De morborum temporibus, Principum Medicorum Aphorismoi

8. For a fever invading after fewer than seven elapsed days, the computation should begin from the hour of the fever for intense ones, but for remiss ones, from the hour of the birth.
9. The beginning of a fever invading at the instant of birth should be counted from the hour of the fever: or, if you like, from the birth.
10. The beginning of a short fever, compared to other times, is sometimes longer, as in an intermittent tertian: sometimes the status is longer, as in a closed fever: sometimes the declination, as in a proportioned bilious one: in a quotidian, the status and declination: whence a quartan is rarely continuous, and a quotidian rarely has integrity.
11. Death will occur in the augmentation of an unhealthy disease if the vehemence of the disease and the weakness of the vitality are less than in the beginning.
12. Furthermore, it has a status if death occurs due to vitality diminished in the status.
13. In acute diseases of any kind, the status does not pass beyond one or two days or accessions: in long and slow ones, it sometimes lasts for many accessions and days, as in a quartan.

These times, considered in relation to essence, are defined by the mutual action of the disease and nature.
1. Only those diseases have these times whose symptoms are weak and which lack proper matter.
2. A hectic fever and an exquisite ephemera have the times of the effective essence alone.
3. Although a hectic fever is produced by an ulcer of the lung, or a putrid fever, or the consumption Hippocrates called dorsal, it does not depend on these as a συνεκτικὴ sustaining cause.
4. The effective essence of a hectic fever is the action of heat, always of the same degree, upon the dewy moisture of the heart.
5. The effective essence of an exquisite ephemera is the vital spirit first ignited in the heart.

Times taken from the matter of the whole disease are defined by its concoction and the opposite of this.
1. The cloud or sediment of urine appearing on the first day of acute diseases is not a sign of concoction, but is the residual part of the nourishment concocted during the time of health.
2. Opposite to concoction is ἀπεψία indigestion or ὠμότης rawness, and μόλυνσις pollution/corruption.
3. Μόλυνσις is either perfect corruption, and cannot be reduced to a benign state: or imperfect, and is completed through further concoction.
4. They call the beginning, in which the matter is entirely raw, the first [stage]: in which concoction is weak, the second.
5. Health occurs through κρίσις crisis, λύσις lysis, or ἀπόκρισις secretion.
6. An abscess contains a μεταβολή change/transformation of the morbific matter, so that the disease is changed again.