No person shall be deprived of life, liberty, or property without due process of law, nor shall any person be denied the equal protection of the laws. – 1987 Constitution, Art. III, Sec. 1
Due process means:
1. There shall be a law prescribed in harmony with the general powers of the legislature;
2. It shall be reasonable in its operation;
3. It shall be enforced according to the regular methods of procedure prescribed; and
4. It shall be applicable alike to all citizens of the State or to all of a class. – People v. Cayat, G.R. No. L-45987, May 5, 1939