Usages of ersterer
Ersterer akzeptiert das Leid, Letzterer vermeidet es.
The former accepts the suffering, the latter avoids it.
Der Arzt und der Philosoph reden. Ersterer heilt das Leid, Letzterer beurteilt es.
The doctor and the philosopher talk. The former heals the suffering, the latter judges it.
Der Professor und der Student diskutieren. Ersterer spricht, Letzterer hört zu.
The professor and the student discuss. The former speaks, the latter listens.
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