The teachings of the Buddha are aimed solely at liberating sentient beings from suffering. The Basic Teachings of Buddha which are core to Buddhism are: The Three Universal Truths; The Four Noble Truths; and • The Noble Eightfold Path.

Pali

pali

Recognition of the fact of suffering as one of three basic characteristics of existence—along with impermanence (anichcha) and the absence of a self (anatta)—constitutes the “right knowledge.” Three types of suffering are distinguished: they result, respectively, from pain, such as old age, sickness, and death; from …

Buddhism is neither pessimistic nor optimistic.

The basis of Buddhism is a doctrine known as the Four Noble Truths. The First Truth is that suffering, pain, and misery exist in life. The Second Truth is that this suffering is caused by selfish craving and personal desire. The Fourth Truth is that the way to overcome this misery is through the Eightfold Path.

Pessimistic religions emphasize the possibility of redemption or otherwise the human agent would likely lose interest in the ‘good’, since this is radically removed from nature. Schopenhauer entertains the hope of attaining the highest good, whether through philosophy or religion.

thinking that bad things are more likely to happen or emphasizing the bad part of a situation: The tone of the meeting was very pessimistic. The doctors are pessimistic (= not hopeful) about his chances of recovery. Synonym. gloomy (WITHOUT HOPE)

A Buddha is one who has attained Bodhi; and by Bodhi is meant wisdom, an ideal state of intellectual and ethical perfection which can be achieved by man through purely human means. The term Buddha literally means enlightened one, a knower.