The Essence of all Religions is the Same

A Common Theme Amongst Nine True Religions in How to Treat Others

The Jewish Faith:
Thou shalt love thy neighbour as thyself.

All things whatsoever ye would that men should do to you, do ye even so to them.

No one of you is a believer until he loves for his brother what he loves for himself.

Sikh Faith:
As thou deemest thyself, so deem others.

Baha'i Faith:
If thou lookest towards justice, choose thou for others what thou choosest for thyself.

Hinduism (Sanathana Dharma):
Men gifted with intelligence and purified souls should always treat others as they themselves wish to be treated.

Buddhist Faith:
In five ways should a clansman minister to his friends and familiars: by generosity, courtesy, and benevolence, by treating them as he treats himself, and by being as good as his word.

Jain Faith:
A man should wander about treating all creatures in the world as he himself would be treated.

Tao Faith:
Regard your neighbour's gain as your own gain, and regard your neighbour's loss as your own loss.

A Saint Who Practically Experienced One God in Different Ways

Sri Ramakrishna Paramahamsa (1836-1886) attained God-realization through four different religious paths (Tantrism, Hinduism, Islam and Christianity), each time meeting the same Absolute God - which prompted him to declare that all religions lead to the same God.
This Hindu Bengali Saint spent a lifetime seeking spiritual enlightenment, beginning in his childhood with a mystical encounter he experienced at the age of six. A temple priest at Dakshinesvar and a mystical devotee of Kali, became a source of religious renewal for a large number of Bengalis who met him during his lifetime.
Mahatma Gandhi said: "The story of Ramakrishna Paramahamsa's life is a story of religion in practice. His life enables us to see God face to face." Romain Rolland wrote "Ramakrishna was a rare combination of individuality and universality, personality and impersonality. His word and example have been echoed in the hearts of Western men and women. His soul animates modern India." His influence was felt throughout the social life of Bengal, where he passed his life in continuation of the bhakti tradition so deeply rooted in that region.
Sri Ramakrishna Paramahamsa said, when asked why God appears different when viewed by different religions, that "God is one, but many are His aspects." He went on to elaborate that response in allegorical terms. But he also said, "We should always maintain an attitude of respect towards other religions. Remain always strong and steadfast in thine own faith, but eschew all bigotry and intolerance."