The Torah

Thou shalt not murder… Thou shalt not steal
(The Ten Commandments, Exodus 20:13)

The Talmud

What you don’t want done to yourself, don’t do unto others – this is the entire Torah. The rest is commentary; go and study. (Talmud, Shabbos 31a)
Be similar to G-d: just as He is kind and merciful, you must also be kind and merciful.”
(Talmud, Shabbos 133b)

The Midrash

I call heaven and earth to witness that whether a person is a Jew or a non-Jew, man or woman, slave or servant-girl, he is judged by the actions he takes, and that is how much the G-d’s inspiration rests on him.
(Tanna D’vei Eliyahu Rabbah Chapter 9)

Rabbi Yehuda Aszod, rabbi of Szerdahely, Hungary (1794–1866)
We must condemn those who spoke disrespectfully of the king and his ministers. The Talmud tells the story of Bava Ben Buta, the Jewish sage who refused to speak against King Herod even secretly, although he was a wicked king who slaughtered the other sages (Bava Basra 4a). It also tells the story of the children of Rabbi Yehudah Nesiah who insulted a young gentile pig shepherd and then almost paid dearly for their mistake when he grew up to be the Roman emperor Diocletian (Yerushalmi Terumos 47a). All the more so is it forbidden to trifle with the honor of a king, son of a king. We must be very strict on the prohibition of stealing from a non-Jew, which is forbidden by the Torah.

We are obligated to speak politely to the gentiles and to inquire after their welfare. Even regarding the Egyptians, who were cruel to us and worshipped idols, the Torah says, “Do not despise an Egyptian, for you were a sojourner in his land” (Deuteronomy 23:8). The Torah made this law applicable even when the Jews had their own land and were no longer dependent on Egypt. It applies all the more today, when we are currently in exile under the protection of the gentiles, benefiting from their generosity.
Furthermore, when the Temple was standing, although Jews were independent and did not need the goodwill of the nations, they offered 70 bulls on Succos on behalf of the 70 nations. Even when the Egyptians were drowning in the sea, G-d did not want the angels to sing, because these wicked people were His creations (Talmud, Megillah 10b). So today, when we live among people who almost all believe in the oneness of G-d, certainly we are forbidden to hate them. The Talmudic Sages even obligate us to pray on their behalf (Avos 3:2).
(From his speech given on Shabbos Shuvah of 1856)

Rabbi Elchonon Wasserman, Rosh Yeshiva of Baranovitch, Poland (1874-1941)
Our whole strength and survival depends on us being in the role of the persecuted. G-d forbid for us to try to become persecutors! One of the three oaths that G-d made the Jewish people swear is “do not rebel against the nations” (Kesubos 111a). “Some come with chariots and some with horses, but we call in the name of The L-rd our G-d.” (Psalms 20:8)
(Article entitled “The Calm Words of the Wise are Heard,” printed in Yalkut Maamarim Umichtavim, pp. 101-102)