"Must" can mean "required" or "to have an obligation to". Thus, for example, we are morally obligated to love our children. But "love" here is not meant in the

"Must" can mean "required" or "to have an obligation to". Thus, for example, we are morally obligated to love our children. But "love" here is not meant in the desiring sense of love (eros, another Greek word) in which one desires something for one's own objective good, or even in the modern squishy sense of having fleeting pleasant or affectionate feelings for. Rather, something like agape (still another Greek word) is meant as parents raise their children primarily for the good and benefit of the children and the common good, not their own self-interest or their own pleasure, even if those elements are present or result secondarily (i.e., the pleasure of selfless acts is not the motive behind selfless acts for that would render them no longer selfless and the pleasure or liberty from self that could follow would not obtain).