Heraclitus

1. Consolatio ad Apollonium Plutarch 1 authority 1 citation

   consolatio ad apollonium

   Heraclitus is explicitly named ('as Heraclitus saith') as the source of a doctrine invoked as authoritative for the letter's argument.

   for it brings on the vicissitudes of night and day, life and death, sleeping and waking.

2. De fortuna Plutarch 1 authority 1 citation

   de fortuna

   Heraclitus is named explicitly as the source of the sun analogy, invoked to support the argument for reason's necessity.

   And as, were there not a sun, we might, for all the other stars, pass our days in darkness (as Heraclitus says);

3. De recta ratione audiendi Plutarch 1 authority 1 citation · 2 passages

   de recta ratione audiendi 2 passages anchored here

   Heraclitus's sayings are invoked twice as authoritative support for surrounding arguments, without being challenged or extended.

   For perhaps, as Heraclitus says, it is an ill thing to conceal even a man’s ignorance;

4. De Superstitione Plutarch 1 authority 1 citation

   de superstitione

   Heraclitus is named explicitly as the source of the quoted saying used to close the paragraph's argument.

   but they that are asleep are retired each to his own private world.

5. De tuenda sanitate praecepta Plutarch 1 endorsed 1 citation

   de tuenda sanitate praecepta

   Heraclitus's anecdote is presented as a positive illustration of discreet self-management, consistent with the surrounding argument's endorsement.

   Heraclitus, when he was in a dropsy, desired his physician to bring a drought upon his body, for it had a glut of rain.

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