In Ray Bradbury"s Something Wicked This Way Comes, it is suggested among several other themes in the novel that "Perfect Love casts out all fear." This quote taken from the Gospel of John illustrates the point that where there is unconditional love, and one loves and is loved in return, there is no fear. This can be believed, because when a person loves life and is content with what he or she has, there is no room for regret. Likewise, when one loves a person and is loved in return, there is trust in trust there is no doubt, and...
loving relationships with people so that she could be loved in return, she is alone and left with what! she has had all along- nothing but fear.

Bradbury, as well as the Gospel of John, bring up valuable ideas about love being vital to the casting out of fear and therefore attaining happiness. As quoted from The Little Prince, "It is only with the heart that one can see rightly what is essential is invisible to the eye," ultimately one can see that love is truly "the vital cement," our shield from fear, and eventually the key to happiness.