The earth is but one country, and mankind its citizens - Baháʼu'lláh

O ye that dwell on earth! The religion of God is for love and unity; make it not the cause of enmity or dissension.

The betterment of the world can be accomplished through pure and goodly deeds and through commendable and seemly conduct.

They who dwell within the Tabernacle of God, and are established upon the seats of everlasting glory, will refuse, though they be dying of hunger, to stretch their hands, and seize unlawfully the property of their neighbour, however vile and worthless he may be. The purpose of the one true God in manifesting Himself is to summon all mankind to truthfulness and sincerity, to piety and trustworthiness, to resignation and submissiveness to the will of God, to forbearance and kindliness, to uprightness and wisdom. His object is to array every man with the mantle of a saintly character, and to adorn him with the ornament of holy and goodly deeds....