Essence is the manifest law of appearances, itself an appearance

Evidence

The appearance does not hide the essence, it reveals it; it is the essence. The essence of an existent is no longer a property sunk in the cavity of this existent; it is the manifest law which presides over the succession of its appearances, it is the principle of the series. To the nominalism of Poincaré, defining a physical reality (an electric current, for example) as the sum of its various manifestations, Duhem rightly opposed his own theory, which makes of the concept the synthetic unity of these manifestations. To be sure phenomenology is anything but a nominalism. But essence, as the principle of the series, is definitely only the concatenation of appearances; that is, itself an appearance. This explains how it is possible to have an intuition of essences (the Wesenchau of Husserl, for example). The phenomenal being manifests itself; it manifests its essence as well as its existence, and it is nothing but the well connected series of its manifestations. — Jean-Paul Sartre, Being and Nothingness, 116

Categorization

• DEFINE: Sartre explains how an intuition of essences (Husserl’s Wesenschau) is possible under phenomenology, against nominalism.
• XREF: Connects to Duhem’s synthetic unity of concept vs. Poincaré’s nominalism — a philosophy-of-science thread. — connects to: An essence is radically severed from the single appearance that manifests it; The being of appearances may differ in kind from appearances of being — Jean-Paul Sartre, Being and Nothingness: An Essay on…, 121; If being consisted of manifesting essence, no pure being moment would be isolable (+1 more)
• QUESTION: Does the Wesenschau here collapse into the synthetic-unity reading, and does that differ from Husserl’s own intended essential intuition?

Broader Connections

• An essence is radically severed from the single appearance that manifests it #contradicts (0.85)
• The being of appearances may differ in kind from appearances of being #expands (0.80) — Jean-Paul Sartre, Being and Nothingness, 121
• If being consisted of manifesting essence, no pure being moment would be isolable #expands (0.80)