All living beings hope for peace and happiness; none of them like to encounter suffering and have afflictions. Then what should one do to leave suffering and attain bliss? The Buddhadharma is the best and most wonderful medicine. The Buddha spoke all Dharmas for all the different thoughts of the living beings--for their false thoughts and attachments, which are the cause for afflictions and suffering. If we can do a good job of learning the Buddhadharma, we can cure these various mental states.
There is a well-known verse in Buddhism:
If one wants to know
The Buddhas of the three periods of time,
One should contemplate the nature of the Dharma Realm:
Everything is made from the mind alone.
The reason we become Buddhas, people, or animals, or fall into the hells, is entirely because of the mind. If we can use the mind well, then we will ascend. When we ascend to the utmost, we become Buddhas.
If we don't know how to use the mind, then we may do stupid things, make mistakes in cause and effect, and incur all kinds of suffering, or even fall into the hells and be unable to get out for measureless kalpas (eons). Should we want to extinguish these sufferings and afflictions, we should regulate our minds and develop proper knowledge and views. If our knowledge and views are deviant and evil, then the karma we create will be bad karma and we will receive all kinds of suffering and harassment. There is a verse which teaches us how to handle our minds:
Originally pure and clean, it dwells in the state of happiness.
Due to false thoughts and attachments, afflictions thus arise.
Afflictions basically don't exist, but we bring them on ourselves.
Not dwelling in a single state, be free and at ease.
As long as we practice according to this verse in our daily lives, we will naturally leave suffering and attain bliss. Buddhadharma stresses practice. If one just studies all the terminology of Buddhism, one is just counting the Buddha's treasures. No true benefit will be attained. Therefore, in the process of learning the Buddhadharma, we must understand how to apply it so that we will genuinely obtain the benefit of learning Buddhism.