In all matters moderation is desirable. If a thing is carried to excess, it will prove a source of evil.
Bahá'u'lláhThat one indeed is a man who, today, dedicateth himself to the service of the entire human race. The Great Being saith: Blessed and happy is he that ariseth to promote the best interests of the peoples and kindreds of the earth. It is not for him to pride himself who loveth his own country, but rather for him who loveth the whole world. The earth is but one country, and mankind its citizens.
Bahá'u'lláhBend your minds and wills to the education of the peoples and kindreds of the earth, that haply the dissensions that divide it may, through the power of the Most Great Name, be blotted out from its face, and all mankind become the upholders of one Order, and the inhabitants of one City.
Bahá'u'lláh