the Four Noble Truths (Budd.), covered by the acronym 苦集滅道 : all life is suffering 苦 , the cause of suffering is desire 集 , emancipation comes only by eliminating passions 灭 , the way 道 to emancipation is the Eight-fold Noble Way 八正道
After a long meditation, finally he attained the Four Noble Truths and Twelve Links of Causation at the night of December eighth of lunar calendar when he was thirty-five years old.