Love
The energetic capacity of love presents a fascinating paradox: an emotion that produces no measurable joules can nonetheless move mountains, albeit metaphorically. Neurologically, romantic attachment triggers dopamine floods comparable to cocaine addiction, whilst maternal love generates sufficient adrenaline for a 60-kilogram woman to lift a vehicle off her trapped child.
Historical documentation reveals love's destructive potential: the Trojan War resulted in an estimated 30,000 casualties over Helen's face; Antony sacrificed the Roman Empire for Cleopatra; and Edward VIII abdicated the British throne for an American divorcee. In pure economic terms, love annually motivates 14 billion pounds in Valentine's Day expenditure alone.
The emotion demonstrates remarkable penetrative capabilities, bypassing all known defensive systems including cynicism, career focus, and repeatedly telling friends one is 'perfectly happy being single, actually.'
Superman
Superman's power output has been quantified by DC Comics' canonical physics at approximately 660 quintillion joules per punch when operating at full capacity. The Kryptonian can bench-press the Earth's weight for five consecutive days, fly at speeds exceeding light, and generate heat vision temperatures surpassing the sun's core.
His resume of accomplishments includes: reversing time by flying counter to Earth's rotation, pushing planets out of orbital paths, sneezing away a solar system (Action Comics #273, notably absurd even by comic standards), and surviving nuclear detonations at point-blank range. He has defeated gods, demons, and the entire Justice League simultaneously.
However, this phenomenal output comes with notable vulnerabilities. Kryptonite reduces him to mortal weakness, magic bypasses his defences entirely, and red sun radiation renders him powerless. His strength, whilst quantifiably immense, remains conditional.