A human being is a part of a whole, called by us universe,
a part limited in time and space. He experiences himself,
his thoughts and feelings as something separated from the
rest, a kind of optical delusion of his consciousness.
This delusion is a kind of prison for us, restricting us to our
personal desires and to affection for a few persons nearest
to us. Our task must be to free ourselves from this prison by
widening our circle of compassion to embrace all living
creatures and the whole of nature in its beauty.
Peace cannot be kept by force.
It can only be achieved by understanding

Albert Einstein