The sixth principle or teaching of Bahá’u’lláh concerns the equality of man and woman. He has declared that in the estimation of God there is no distinction of sex. The one whose heart is most pure, whose deeds and service in the Cause of God are greater and nobler, is most acceptable before the divine threshold—whether male or female. In the vegetable and animal kingdoms sex exists in perfect equality and without distinction or invidious estimate. The animal, although inferior to man in intelligence and reason, recognizes sex equality. Why should man, who is endowed with the sense of justice and sensibilities of conscience, be willing that one of the members of the human family should be rated and considered as subordinate? Such differentiation is neither intelligent nor conscientious; therefore, the principle of religion has been revealed by Bahá’u’lláh that woman must be given the privilege of equal education with man and full right to his prerogatives. That is to say, there must be no difference in the education of male and female in order that womankind may develop equal capacity and importance with man in the social and economic equation. Then the world will attain unity and harmony. In past ages humanity has been defective and inefficient because it has been incomplete. War and its ravages have blighted the world; the education of woman will be a mighty step toward its abolition and ending, for she will use her whole influence against war. Woman rears the child and educates the youth to maturity. She will refuse to give her sons for sacrifice upon the field of battle. In truth, she will be the greatest factor in establishing universal peace and international arbitration. Assuredly, woman will abolish warfare among mankind. Inasmuch as human society consists of two parts, the male and female, each the complement of the other, the happiness and stability of humanity cannot be assured unless both are perfected. Therefore, the standard and status of man and woman must become equalized. Among other teachings and principles Bahá’u’lláh counsels the education of all members of society. No individual should be denied or deprived of intellectual training, although each should receive according to capacity. None must be left in the grades of ignorance, for ignorance is a defect in the human world. All mankind must be given a knowledge of science and philosophy—that is, as much as may be deemed necessary. All cannot be scientists and philosophers, but each should be educated according to his needs and deserts.