Do your duty and a little more, lad.  Most men do their duty.  It is the little more that makes the difference between one man and the other.
– G.A. Henty

And thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy mind, and with all thy strength: this is the first commandment.  And the second is like, namely this, Thou shalt love thy neighbour as thyself.
– The Lord Jesus Christ (Mark 12:30-31)