Full Idea
All moral relations of rational beings, which involve a principle of the harmony of the will of one with another, can be reduced to love and respect. Love reduces one's will to another's end, and respect to another's right.
Gist of Idea
All morality directs the will to love of others' ends, and respect for others' rights
Source
Immanuel Kant (Metaphysics of Morals II:Doctrine of Virtue [1797], 488 II)
Book Reference
Kant,Immanuel: 'The Metaphysics of Morals', ed/tr. Gregor,Mary [CUP 1991], p.276
A Reaction
It all comes out too neat and tidy in Kant. Love doesn't merely focus on another person's 'ends', and respect should be for a lot more than another person's mere 'rights'. They'd have to be natural rights, because some societies restrict rights.