Tosefta, Tractate Erubin VIII When a Jew has a Gentile in his clutches, another Jew may go to the same Gentile, lend him money and in turn deceive him, so that the Gentile shall be ruined. For the property of a Gentile, according to our law, belongs to no one, and the first Jew that passes has full right to seize it.
Sanhedrin 59a - To communicate anything to a Goy ( Goy means unclean, and is the disparaging term for a non-Jew ) about our religious relations would be equal to the killing of all Jews, for if the Goyim knew what we teach about them, they would kill us openly.
Schulchan Aruch, Choszen Hamiszpat 156 - If it can be proven that someone has given the money of Israelites to the Goyim, a way must be found after prudent consideration to wipe him off the face of the earth.
Zohar, Vayshlah 177b That the Jewish nation is the only nation selected by God, while all the remaining ones are contemptible and hateful. That all property of other nations belongs to the Jewish nation, which consequently is entitled to seize upon it without any scruples. An orthodox Jew is not bound to observe principles of morality towards people of other tribes. He may act contrary to morality, if profitable to himself or to Jews in general. A Jew may rob a Goy, he may cheat him over a bill, which should not be perceived by him, otherwise the name of God would become dishonoured.
Sanhedrin 57a -[Translation: A Jew may rob a Goy, but a Goy may not rob a Jew. If a Goy murders another Goy or a Jew, he should be killed, but a Jew will not be incur the death penalty for killing a non-Jew.] Kill the Goyim by any means possible.
Yalkut 245c - Extermination of the Christians is a necessary sacrifice.