Buddhism is the lime light of Sri Lankan Civilization from ancient times. Everything about Sri Lankan life related to Buddhism.  Buddhism practiced in Sri Lanka is called Theravada which's main focus is to give priority to philosophy of living a simple life.

Buddhism has Three main  Practices:

Sila
Virtue, good conduct, morality. This is based on two fundamental principles: The principle of equality: that all living entities are equal.

Samadhi:
Concentration, meditation, mental development. Developing one's mind is the path to wisdom which in turn leads to personal freedom. Mental development also strengthens and controls our mind; this helps us maintain good conduct.

Prajna:
Discernment, insight, wisdom, enlightenment. This is the real heart of Buddhism. Wisdom will emerge if your mind is pure and calm.


There are Four Noble Truths:
The Lord Buddha's Four Noble Truths explore human suffering described as

Dukkha:
The reality and universality of suffering. Suffering has many causes: loss, sickness, pain, failure, the impermanence of pleasure.

Samudaya:
The cause of suffering is a desire to have and control things. It can take many forms: craving of sensual pleasures; the desire for fame; the desire to avoid unpleasant sensations, like fear, anger or jealousy.

Nirodha: Suffering ceases with the final liberation of Nirvana. The mind experiences complete freedom, liberation and non-attachment. It lets go of any desire or craving.
 
Marga: The eightfold path leads to the cessation of suffering.


The Five fundamental precepts observed by a Buddhist:
These are rules are to live by.

Panathipatha:  I do not kill or harm another life
Addinadana : I do not steal from another.
Muswada : I do not lie
Kamesumichchachara : I do not misuse sex
Surameraya : I do not consume alcohol or other drugs

The Eightfold Path to enlightment:
1) Samma ditthi : Right Understanding of the Four Noble Truths
2) Samma sankappa : Right thinking; following the right path in life
3) Samma vacha: Right speech: specking non harsh language
4) Samma kammanta : Right conduct by following the Five Precepts
5) Samma aajeeva: Right livelihood
6) Samma vayama Right Effort to promote good thoughts
7) Samma sati : Right Mindfulness to be aware of your body, mind and feelings
8) Samma samadhi Right Concentration and meditation to achieve a higher state of consciousness


Buddhism has the characteristics of what would be expected in a cosmic religion for the future: it transcends a personal God, avoids dogmas and theology; it covers both the natural & spiritual, and it is based on a religious sense aspiring from the experience of all things, natural and spiritual, as a meaningful unity"  - Albert Einstein