Two individuals differ haecceitistically just in case they have different haecceities. Differing haecceitistically is consistent with sharing many properties and also with differing with respect to many properties. In contrast, two individuals differ merely haecceitistically just in case they share all the same properties but differ haecceitistically. Haecceitism entails that there is a possible world qualitatively identical to, but nevertheless distinct from, the actual world where my haecceity is swapped with yours.

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At the age of seventeen or eighteen, they should be indulged, even FOR A MORAL PURPOSE, in fishing, shooting, hunting*, tennis, cricket, and all other diversions consistent with safety, good company, health^†, and œconomy.

Netting a quick ten grand on a day trade of 1750 shares, he paid off his credit-card debts and gave his wife a ring with five diamonds.