Cross
The cross exists in all things and represents sacrifice in all periods[edit]
"As for the symbol of the cross, appointed in former times: Know verily, that the cross form is a wonderful figure and consists of two right lines placed crosswise—one perpendicular to the other—and this figure exists in all things.
"Meditate upon these words and pay attention to the tissue in all existing substances, either plant, animal or man, and thou wilt see that they all are formed of the cross figure or two crosswise lines. Consider this intently with true meditation. Then thou wilt be taught by the Holy Ghost that it is for this reason that God hath chosen this symbol to be displayed as the token of sacrifice in all periods of the ages.
"I will explain to thee, in future time, the mystery of sacrifice. There is nothing more beautiful than this tree united with the cross. Verily, this tree is a type of the Tree of Life inconjunction with the cross; in this, the mystery of sacrifice."
- (Tablets of 'Abdu'l-Bahá, Vol. III, p. 598, also cited in part in Lights of Guidance, no. 1718)
Cross has no magical power; worn for remembrance and to concentrate thoughts[edit]
"Someone wished to know if it were a good custom to wear a symbol, as, for instance, a cross. He said: "You wear the cross for remembrance, it concentrates your thoughts; it has no magical power. Bahá'ís often wear a stone with the greatest name engraved on it: there is no magical influence in the stone; it is a reminder, and companion. If you are about to do some selfish or hasty action, and your glance falls on the ring on your hand, you will remember and change your intention."
- (Attributed to 'Abdu'l-Bahá, 'Abdu'l-Bahá in London, "Symbols", pp. 93-94)