Durability-Transience

People are too durable, that's their main trouble. They can do too much to themselves, they last too long. (Brecht)

To endure what is unendurable is true endurance. (Japanese proverb)

When two people are under the influence of the most violent, most insane, most delusive and most transient of passions, they are required to swear that they will remain in that excited, abnormal, and exhausting condition continuously until death do them part. (Shaw)

Art is long, life short; judgement difficult, opportunity transient. (Goethe)