Probably one of the best (in my opinion) and most literal examples of this is Harry Potter. In the book one of the most important part of the plot is a prophecy that claims that Harry is the chosen one and has "a power the dark Lord knows not" which is literally love. The fact that Harry's mother loved him enough to die for him is the one thing that Voldemort did not expect and as such he was unable to kill Harry. Since Voldemort it is unable to feel love he does not anticipate that anybody would love their child enough to die for them and as a result is destroyed. This continues to be a reoccurring theme in all of the books as people who love Harry help him even though that tends to ruin their lives. Voldemort continues to be basically blindsided by this as he can't feel love and can't relate to them.
I really agree with this aphorism, because it kind of just makes sense to me . I mean the majority of us wouldn't have survived past being infants if it wasn't for the fact that our mother loved us enough to keep dealing with all the stress that raising a child brings. Then later on in life if it was for the support and love from friends and family many of us would've given up on a lot of things. So although some people will say that putting love above everything else make somebody weak and easy to manipulate, in reality love is a driving force in our society. Its been shown in a lot of pop culture too. The basic premise behind romantic comedies trying to find love, sure they find it in a funny way but they do find it .