What, now, is the Noble Truth of Suffering?
Birth is suffering; Decay is suffering; Death is suffering; Sorrow, Lamentation, Pain, Grief, and Despair are suffering; not to get what one desires, is suffering; in short: the Five Groups of Existence are suffering.
What, now, is Birth? The birth of beings belonging to this or that order of beings, their being born, their conception and springing into existence, the manifestation of the groups of existence, the arising of sense activity: this is called birth.
And what is Decay? The decay of beings belonging to this or that order of beings; their becoming aged, frail, grey, and wrinkled; the failing of their vital force, the wearing out of the senses: this is called decay.
And what is Death? The departing and vanishing of beings out of this or that order of beings; their destruction, disappearance, death, the completion of their life-period, dissolution of the groups of existence, the discarding of the body: this is called death.
And what is Sorrow? The sorrow arising through this or that loss or misfortune which one encounters, the worrying one- self, the state of being alarmed, inward sorrow, inward woe: this is called sorrow.
And what is Lamentation? Whatsoever, through this or that loss or misfortune which befalls one, is wail and lament, wailing and lamenting, the state of woe and lamentation: this is called lamentation.
And what is Pain? The bodily pain and unpleasantness, the painful and unpleasant feeling produced by bodily impression: this is called pain.
And what is Grief? The mental pain and unpleasantness, the painful and unpleasant feeling produced by mental impression: this is called grief.
And what is Despair? Distress and despair arising through this or that loss or misfortune which one encounters: distressfulness, and desperation: this is called despair.
And what is the ‘Suffering of not getting what one desires’? To beings subject to birth there comes the desire; ‘O, that we were not subject to birth! O, that no new birth was before us!’ Subject to decay, disease, death, sorrow, lamentation, pain, grief, and despair, the desire comes to them: ‘O, that we were not subject to these things! O, that these things were not before us!’ But this cannot be got by mere desiring; and not to get what one desires, is suffering.
(Digha Nikaya 22, Tipitaka)