May 1

…the advancement of civilization, material perfections and human virtues will bear no fruit or result unless joined to the spiritual perfections; merciful qualities and sound morals, and the happiness of the human world, which is the original goal, will not be attained. For although through the advancement of civilization and the adornment and refinement of the material world, happiness is realized, and the sight of hopes fulfilled in perfect beauty wins the heart, yet, concomitantly, great dangers, severe ordeals and awful catastrophes are involved. 
- ‘Abdu’l-Baha  (From a Tablet, Star of the West, vol. 6, no. 9, August 20, 1915)