This document discusses burden and standard of proof in law of evidence. It defines burden of proof as the obligation to provide sufficient evidence to support one's case, and distinguishes between burden of establishing a case and evidential burden of introducing evidence. The standard of proof refers to the degree of probability required to discharge the burden. For criminal cases, the standard is proof beyond reasonable doubt, while for civil cases it is on a balance of probabilities. The more serious the allegation, the higher the standard of proof required.