Essentially, according to Buddhist teachings, the ethical and moral principles are governed by examining whether a certain action, whether connected to body or speech is likely to be harmful to one's self or to others and thereby avoiding any actions which are likely to be harmful. In Buddhism, there is much talk of a skilled mind. A mind that is skilful avoids actions that are likely to cause suffering or remorse.

Moral conduct for Buddhists differs according to whether it applies to the laity or to the Sangha or clergy. A lay Buddhist should cultivate good conduct by training in what are known as the "Five Precepts". These are not like, say, the ten commandments, which, if broken, entail punishment by God. The five precepts are training rules, which, if one were to break any of them, one should be aware of the breech and examine how such a breech may be avoided in the future. The resultant of an action (often referred to as Karma) depends on the intention more than the action itself. It entails less feelings of guilt than its Judeo-Christian counterpart. Buddhism places a great emphasis on 'mind' and it is mental anguish such as remorse, anxiety, guilt etc. which is to be avoided in order to cultivate a calm and peaceful mind. The five precepts are:

1) To undertake the training to avoid taking the life of beings. This precept applies to all living beings not just humans. All beings have a right to their lives and that right should be respected.

2) To undertake the training to avoid taking things not given. This precept goes further than mere stealing. One should avoid taking anything unless one can be sure that is intended that it is for you.

3) To undertake the training to avoid sensual misconduct. This precept is often mistranslated or misinterpreted as relating only to sexual misconduct but it covers any overindulgence in any sensual pleasure such as gluttony as well as misconduct of a sexual nature.

4) To undertake the training to refrain from false speech. As well as avoiding lying and deceiving, this precept covers slander as well as speech which is not beneficial to the welfare of others.

5) To undertake the training to abstain from substances which cause intoxication and heedlessness. This precept is in a special category as it does not infer any intrinsic evil in, say, alcohol itself but indulgence in such a substance could be the cause of breaking the other four precepts.

These are the basic precepts expected as a day to day training of any lay Buddhist. On special holy days, many Buddhists, especially those following the Theravada tradition, would observe three additional precepts with a strengthening of the third precept to be observing strict celibacy. The additional precepts are:

6) To abstain from taking food at inappropriate times. This would mean following the tradition of Theravadin monks and not eating from noon one day until sunrise the next.

7) To abstain from dancing, singing, music and entertainments as well as refraining from the use of perfumes, ornaments and other items used to adorn or beautify the person. Again, this and the next rule.

8) To undertake the training to abstain from using high or luxurious beds are rules regularly adopted by members of the Sangha and are followed by the layperson on special occasions.

Laypersons following the Mahayana tradition, who have taken a Bodhisattva vow, will also follow a strictly vegetarian diet. This is not so much an additional precept but a strengthening of the first precept; To undertake the training to avoid taking the life of beings. The eating of meat would be considered a contribution to the taking of life, indirect though it may be.