"Religion is the outer expression of the divine reality. Therefore it must be living, vitalized, moving and progressive. If it be without motion and non-progressive it is without the divine life; it is dead. The divine institutes are continuously active and evolutionary; therefore the revelation of them must be progressive and continuous. All things are subject to re-formation. This is a century of life and renewal. Sciences and arts, industry and invention have been reformed. Law and ethics have been reconstituted, reorganized. The world of thought has been regenerated. Sciences of former ages and philosophies of the past are useless today. Present exigencies demand new methods of solution; world problems are without precedent. Old ideas and modes of thought are fast becoming obsolete. Ancient laws and archaic ethical systems will not meet the requirements of modern conditions, for this is clearly the century of a new life, the century of the revelation of the reality and therefore the greatest of all centuries. Consider how the scientific developments of fifty years have surpassed and eclipsed the knowledge and achievements of all the former ages combined. Would the announcements and theories of ancient astronomers explain our present knowledge of the sun-worlds and planetary systems? Would the mask of obscurity which beclouded mediaeval centuries meet the demand for clear-eyed vision and understanding which characterizes the world today? Will the despotism of former governments answer the call for freedom which has risen from the heart of humanity in this cycle of illumination? It is evident that no vital results are now forthcoming from the customs, institutions and standpoints of the past. In view of this, shall blind imitations of ancestral forms and theological interpretations continue to guide and control the religious life and spiritual development of humanity today? Shall man gifted with the power of reason unthinkingly follow and adhere to dogma, creeds and hereditary beliefs which will not bear the analysis of reason in this century of effulgent reality? Unquestionably this will not satisfy men of science, for when they find premise or conclusion contrary to present standards of proof and without real foundation, they reject that which has been formerly accepted as standard and correct and move forward from new foundations."
(Abdu'l-Baha, Baha'i World Faith - Abdu'l-Baha Section, p. 224)