The Koran

Nothing more can be considered as real merit for a person than his effort. Only in his effort is a person shown in his real light.
The kindness of a dove is not virtue. A dove is not more virtuous than an eagle. Virtue begins only when there is an effort. If God wanted to, he could have made us one nation, but he tests us. Wherever you go, in all places, try as much as you can to be kind, to be good, and then the day will come when God will unite all of us.