Mirror in the sky, what is love?

 Beautiful line from the song "Landslide" by Fleetwood Mac and sung by Stevie Nicks, and also sung by the Dixie Chicks—let’s answer it by reason.

• Focus
  We’ll ask: what is love, as a fact in human life, not a wish.

• Observation
  Common features people report: admiration, desire for closeness, joy in the other’s success, trust, willingness to invest effort, grief at loss, long-term concern.

• Isolation and description
  Kinds to compare/contrast:

  • Romantic partner love
  • Friendship
  • Parental/filial
  • Benevolent goodwill to strangers
    Foils to exclude:
  • Mere lust/infatuation (intensity without appraisal)
  • Dependency/addiction (need without esteem)
  • Control/jealousy (fear without respect)

• Concept-formation and definition by essentials
  Genus: a value-relationship.
  Differentia: chosen, reality-based esteem for another person’s character and way of life, integrating attachment, admiration, and commitment to mutual flourishing.
  Concise definition: Love is a chosen, value-based attachment to a person you rationally esteem as a major value, expressed as enduring concern and action for mutual flourishing.

• Propositions (facts about love)

  • Love is a response to values you recognize in another (virtues, character, shared purposes).
  • It cannot be commanded or faked; it is earned by who one is and how one acts.
  • It is not self-sacrifice; it’s a positive-sum trade of value for value.
  • Passion can start love; only character and shared values sustain it.

• Induction (what’s universal across cases)
  Across friendships, romance, and family, what persists are: esteem, trust, joy in the other’s existence, willingness to act for their good, and integration of lives to mutual benefit.

• Deduction (implications)

  • To find or grow love: clarify and live your values; seek those who share or complement them; look for consistent character; practice honesty and reciprocity.
  • Where core values deeply clash, sustained love will erode despite chemistry.

• Reduction (tie to observable markers)
  Look for: alignment between words and deeds; reliability under stress; respectful conflict repair; mutual investment of time/effort; freedom to be oneself without fear.

• Measurement/quantification (imperfect but useful proxies)

  • Reliability rate: kept/renegotiated commitments over time.
  • Conflict health: ratio of constructive repairs to escalations.
  • Growth index: are both lives measurably better (skills, wellbeing, goals) year over year?
  • Trust tests: comfort sharing vulnerabilities; low monitoring/jealousy.

• Causal explanation (why it forms and lasts)

  • Biology supplies attachment/pleasure systems (dopamine, oxytocin/vasopressin).
  • Psychology appraises values/virtues; shared projects and earned trust convert chemistry into a stable bond.
  • Repeated positive-sum exchanges reinforce attachment; betrayal or chronic value conflict degrades it.

• Context-keeping (distinctions)

  • Infatuation: novelty- and uncertainty-driven arousal; fades without value alignment.
  • Codependence: relief of anxiety via control/compliance; harms both long-range.
  • “Unconditional love”: healthy as baseline goodwill to children; between adults, love stays healthy when it remains conditional on character and conduct.

• Validation standards
  Claims like “love means never having to say sorry” are arbitrary or false; enduring bonds show frequent, sincere repair.

• Error detection (common fallacies)

  • “Jealousy proves love” (it proves insecurity/possessiveness).
  • “If it hurts, it’s deep” (pain often signals value-conflict or disrespect).
  • “Love will fix them” (people fix themselves; love can support, not substitute, change).

• Evaluation (is love good?)
  Proper love powerfully advances a rational life: meaning, resilience, joy, productivity. It is good when it promotes the long-range flourishing of both parties; bad when it demands evasion, self-betrayal, or force.

• Virtues in love
  Rationality (facts over wish), honesty (truth without cruelty), independence (two wholes, not two halves), integrity (values in action), justice (esteem the worthy), productiveness (build a shared life), pride (self-respect that enables real union).

• Deliberation: ends–means
  End: a flourishing life with another.
  Means: choose partners by character/values; communicate clearly; set and keep boundaries; build shared projects; resolve conflicts fairly.

• Decision and action (practical checklist)
  Ask:

  • Do I admire who they are?
  • Do our core values and life directions fit?
  • Is there mutuality—each gives and grows?
  • Do actions match words, especially under stress?
  • Am I more myself with them—and are they more themselves with me?
    If “yes” over time, act accordingly: commit, invest, build. If “no,” adjust or part.

• Feedback and iteration
  Track the health of the bond; when outcomes diverge from intentions, diagnose (facts first), repair if possible, or realign decisions with reality.

A poetic return: Love isn’t a riddle in the sky but a clear reflection on earth—seeing and choosing the admirable in another, and building, together, a life that makes both of you more alive.