There is no one unique message for the two sects and various movements of modern Judaism save for overbroad statements (like "do unto others as they would do unto you").
The essential message of Torah Judaism is: By following the will of God through the commandments given, every man can be a critical part of building world in accordance with that which is good and just.
The essential message of Liberal Judaism is: An integrated approach, taking tradition and contemporary knowledge together can result in a morally upright lifestyle in the modern era.
That which is hateful to you, do not do to others.------------------------------------------------------------------------------------------------------
Judaism is not a centralised religion and does not have a single leader.
Lots of those. In more or less the order of most traditional to least traditional, here are some: Modern Orthodox Judaism Masorti (Traditional) Judaism Conservative Judaism Reform Judaism Liberal Judaism Reconstructionist Judaism Renewal Judaism Humanistic Judaism
Ben Zion Bokser has written: 'Judaism and modern man' -- subject(s): Judaism 'The Essential Writings of Abraham Isaac Kook (Roots of Wisdom Book)' 'The legacy of Maimonides' 'The Essential Writings of Abraham Isaac Kook' 'Talmudic forgeries' 'Judaism' -- subject(s): Judaism 'The gift of life' -- subject(s): Life
Judaism
Christianity and Modern forms of Judaism all branched off from Biblical Judaism.
the orthodox judaism Actually the previous answer is not true. Orthodox Judaism as we know it today developed in Europe within the last 150 years. Pre Modern Judaism looked a lot different, and was much less unified.
The essential message of Don Quixote is that morality is not the same everywhere. Another essential message to take away from this story is that there is a sharp division between wealth and class.
Judaism has not had "revolutions" since religions and ideologies cannot have revolutions.
Hasidism is a movement in modern Judaism.
judaism
The essential message of the near-sacrifice of Isaac is 'Have faith in God and obey Him'.