"Decent society is a society that creates long-term links with the ancestors and their culture and history," the King said. "We do not want to disinherit our children."
He stressed that despite substantial efforts, European nations still face unemployment, social inequality and poor working conditions, issues that signify, in his words, that "human values are losing ground."
He also warned of a tendency for what he termed fragmentation in greater Europe.
The King said Europe needs to restore "the vision of human beings in its full dimension" and called for the protection of individual rights to privacy and safety from external interference.
The mission of greater Europe, according to the King, is to build a culture of "enablement," allowing individuals to develop their potential and personality, as well as being able to fully engage with others.
PACE is holding its spring session on April 20-24. Participants are expected to discuss mass surveillance and the protection of human rights, as well as the situation in Ukraine. The assembly will also debate the sanctions against Russia, and the humanitarian crimes by the Islamic State extremist group.