The Four Noble Truths

These are the Four Noble Truths that became self-evident to Siddhārtha Gautama (4th or 5th Century, BCE):

The Nature of Suffering

"Now this ... is the noble truth of suffering: birth is suffering, aging is suffering, illness is suffering, death is suffering; sorrow, lamentation, pain, grief and despair are suffering; union with what is displeasing is suffering; separation from what is pleasing is suffering; not to get what one wants is suffering; in brief, the five aggregates subject to clinging are suffering."

Suffering's Origin

"Now this ... is the noble truth of the origin of suffering: it is this craving which leads to renewed existence, accompanied by delight and lust, seeking delight here and there, that is, craving for sensual pleasures, craving for existence, craving for extermination."

Suffering's Cessation

"Now this ... is the noble truth of the cessation of suffering: it is the remainderless fading away and cessation of that same craving, the giving up and relinquishing of it, freedom from it, nonreliance on it."

The Way Leading to the Cessation of Suffering

"Now this ... is the noble truth of the way leading to the cessation of suffering: it is the Noble Eightfold Path; that is, right view, right intention, right speech, right action, right livelihood, right effort, right mindfulness, right concentration."

And, exactly what was the Buddha after with these Four Noble Truths? Well, he said he taught them "because it is beneficial, it belongs to the fundamentals of the holy life, it leads to disenchantment, to dispassion, to cessation of suffering, to peace, to direct knowledge, to enlightenment, to Nirvana. That is why I have declared it."

Or, in the short version, it is the path that one must follow to "attain happiness".

There's that word again.