It is difficult to grasp the truth of dukkha, but one can begin to develop more understanding of the phenomena which appear in one’s life. The Buddha taught Dhamma in order that people could investigate all realities. The word "dhamma" has different meanings, but in its widest sense dhamma is everything which is real and which has its own characteristic. Seeing is dhamma, attachment is dhamma, anger is dhamma. They are realities which can be experienced by everybody. We can read about seeing, attachment or anger, but when these realities occur we can learn to distinguish their different characteristics. Knowledge of realities can be acquired through the study of the Abhidhamma, but this knowledge should be applied so that there can eventually be direct understanding of realities. We are full of attachment, anger, avarice, conceit, jealousy, full of defilements, but understanding of all these realities can be developed. If dislike, for example, would be suppressed, instead of knowing its characteristic when it appears, there would be ignorance of the way it is conditioned. It would not be known that it is attachment which conditions dislike. If there is ignorance of what is wholesome and what is unwholesome, wholesome qualities could not be developed. Understanding can be developed of the countless moments of attachment which arise after seeing, hearing and the other experiences through the senses. All realities arise because of their own conditions.