How would you explain the Pauli Exclusion Principle?

An orbital can hold not more than 2 electrons, and if there are two electrons in the orbital, they must have opposite (paired) spins. Therefore, no two electrons in the same atom can have the same set of four quantum numbers.

otherwise the Pauli exclusion principle explain that the feature of particles dependent on its nature. for example electrons is fermion thus 2 electrons can accommodate in one level (orbital) but proton is bozone thus 1 proton accommodate in one level.