Sacca (Pāli; Sanskrit Satya) word meaning "real" or "true". In early Buddhist literature, sacca is often found in the context of the "Four Noble Truths", a crystallization of Buddhist wisdom. In addition, sacca is one of the ten pāramitās or "perfections" a bodhisatta must develop in order to become a Buddha.
In the Pali Canon, sacca is frequently found in the term ariya-sacca, meaning "noble truth" or "truth of the noble ones". More specifically, the term ariya-sacca refers to the Buddha's "Four Noble Truths," elucidated in his first discourse as follows (where sacca is translated as "reality"):
Now this, bhikkhus, is the Truth about pain: birth is painful, aging is painful, illness is painful, death is painful; sorrow, lamentation, physical pain, unhappiness and distress are painful; union with what is disliked is painful; separation from what is liked is painful; not to get what one wants is painful; in brief, the five bundles of grasping-fuel are painful.
Now this, bhikkhus, is the Truth about that which causes pain: It is this craving which leads to renewed existence, accompanied by delight and attachment, seeking delight now here now there; that is, craving for sense-pleasures, craving for existence, craving for extermination (of what is not liked).
Now this, bhikkhus, is the Truth about that which can put an end to pain. It is the remainderless fading away and cessation of that same craving, the giving up and relinquishing of it, freedom from it, non-reliance on it.