The solution given to the world's problems by Baha'u'llah

...the solution given to the world's problems by Bahá'u'lláh is the only solution -- being Divine in origin -- and most desperately needed; therefore we, the few who have caught the vision, should not waste our energies beating up and down the paths pursued by humanity, and which are not solving its ghastly present-day problems. We should concentrate on the Cause, because it is what is needed to cure the world. This is a sound attitude, for if we don't devote ourselves to the Bahá'í work and teaching, who will?

(5 July 1949 written on behalf of Shoghi Effendi)
(The Compilation of Compilations Vol II, p.273)