What is the Four Noble Truths There exists the truth of suffering.It is a noble truth and has to be realized. This suffering forms because one gets attached to it. This attachment to suffering is the cause of formation of suffering (dukkha samudhaya ārya sattya). One has to eradicate the attachment to that suffering. It is called the eradication of the cause of suffering. It is a noble truth. If one’s attachment to suffering is ended, he is free from suffering.