I have many favorite books but I think Khalil Gibran's The Prophet is my greatest favorite. This small book contains so much truth about almost all the important things in life: marriage, children, giving, eating and drinking, work, joy and sorrow, crime and punishment, laws, freedom, pain, good and evil, etc. There isn't one superfluous word in it.
My favorite line is the last in the book:
"A little while, a moment of rest upon the wind, and another woman shall bear me."
Khalil Gibran teaches us a lot about the transient aspect of live, but also tells us it is eternal. We are part of an infinite chain, but only as a minute link.
Anyone who has read and pondered on The Prophet will never hate his neighbor, will never use violence or support it. He will always be someone who loves and cares for humanity.