The internet is full of wedding-card quotes. This list is not that. The ten below come from people who lived through long marriages or studied them for a living, and each one points at a specific mechanism that makes a marriage last thirty or forty years instead of five.

1. "A great marriage is not when the perfect couple comes together. It is when an imperfect couple learns to enjoy their differences." — Dave Meurer

The idea that compatibility is found rather than built is one of the most durable myths about long marriages. Compatibility is mostly constructed, not discovered — by two imperfect people practising.

2. "Marriage is not a noun; it's a verb. It isn't something you get. It's something you do." — Barbara De Angelis

Daily action framing beats daily feeling framing. Feelings fluctuate; actions compound.

3. "The real act of marriage takes place in the heart, not in the ballroom or church or synagogue. It's a choice you make." — Barbara De Angelis

The ceremony is a memory-maker, not the marriage. The marriage is the accumulated weight of daily choices to keep choosing.

4. "Being deeply loved by someone gives you strength, while loving someone deeply gives you courage." — Lao Tzu

Both directions matter. Long marriages typically involve both people receiving and extending love — not just one end of the exchange.

5. "To keep your marriage brimming with love in the loving cup, whenever you're wrong, admit it; whenever you're right, shut up." — Ogden Nash

Jokey surface, serious content. Gottman's data on repair attempts shows this is close to clinically correct advice.

6. "The goal in marriage is not to think alike, but to think together." — Robert C. Dodds

Agreement is not the target; shared deliberation is. Long marriages rarely feature matched opinions; they feature practised ways of holding disagreements without damage.

7. "A happy marriage is a long conversation which always seems too short." — André Maurois

Romantic on the surface, operational underneath: the couples that last are often the ones still curious about each other decades in. Curiosity is the protective factor.

8. "In every marriage more than a week old, there are grounds for divorce. The trick is to find, and continue to find, grounds for marriage." — Robert Anderson

The longest-married couples report not absence of frustration but a persistent focus on reasons to stay. The focus itself is the practice.

9. "Love doesn't just sit there like a stone; it has to be made, like bread." — Ursula K. Le Guin

Maintenance view of love, not discovery view. The discovery view sells more films; the maintenance view produces more long marriages.

10. "A successful marriage requires falling in love many times, always with the same person." — Mignon McLaughlin

If marriage were one act of falling in love that had to last forever, the divorce rate would be 100 %. It's a series of re-fallings, with the same person, over decades.

None of these are shortcuts. Taken together they describe a practice — small, consistent, mostly invisible from outside. That practice is what a long and happy marriage actually is.