Human progress having reached a high level through respect for the liberty and dignity of men, it has become desirable to re-affirm these evident truths:

• That differences of race, color, and creed are natural, and that diverse groups, institutions, and ideas are stimulating factors in the development of man;
• That to promote harmony in diversity is a responsible task of religion and statesmanship;
• That since no individual can express the whole truth, it is essential to treat with understanding and good will those whose views differ from our own;
• That by the testimony of history intolerance is the door to violence, brutality and dictatorship; and
• That the realization of human interdependence and solidarity is the best guard of civilization.
• Rooted in freedom, bonded in the fellowship of danger, sharing everywhere a common human blood, we declare again that all men are brothers, and that mutual tolerance is the price of liberty.

— Will Durant, Declaration of Interdependence