“We verily,” He [Baha'u'llah] Himself has testified, “have not fallen short of Our duty to exhort men, and to deliver that whereunto I was bidden by God, the Almighty, the All-Praised. Had they hearkened unto Me, they would have beheld the earth another earth.” And again: “Is there any excuse left for anyone in this Revelation? No, by God, the Lord of the Mighty Throne! My signs have encompassed the earth, and My power enveloped all mankind, and yet the people are wrapped in a strange sleep!”
- Shoghi Effendi (‘The Promised Day Is Come’)