You can buy good tonics, but you cannot buy good health. You can buy good books, but you cannot buy wisdom. Perfect peace cannot be promoted by anybody who does not have perfect peace in himself. No political 'ism' can ever solve the problem and bring about real peace. Each new 'ism' creates only more problems and more quarrels.
Love alone can bring peace to the world.
Therefore love all. Only if everyone practices the religion of love, can there be peace in the world. Ethics should be put into practice by all. This alone will contribute to peace, universal love, unity, proper understanding, world harmony and brotherhood of mankind. Everlasting Peace can be found only within your own Atman or Self, or God.