The governing principles which lie at the core of modern criminal law are as follows:
•The principle of welfare and upholding the common good,
•The principle of prevention of harm to others,
•The principle of minimal intervention: Law should not criminalize too much behaviour,
•The principle of social responsibility: Society requires a certain level of cooperation between citizens,
•The principle of proportionate response: The response of criminal law should be reasonably in proportion to the harm committed or threatened to be committed,
•The non-retroactivity principle: A person should not be convicted or punished except in accordance with a previously declared offense,
•The thin-ice principle: Those who skate on thin ice can hardly expect to find a sign denoting the precise spot where they will fall in,
•The principle of maximum certainty: People should have sufficiently certain and clear warnings about the forbidden conducts,
•The principle of fair labelling: Offenses should be labelled in a manner to reflect the seriousness of the law violated,
•The principle of strict construction: Ambiguities in criminal law should be construed in favour of the defendant,
•The presumption of innocence: A principle of procedural fairness that the defendant should be presumed innocent until proved guilty.