Neufeld believed in a synthesis of Jewish and Polish cultures which would combine Polish patriotism and the Jewish religion. He was conservative in religious matters and progressive in his social concerns. Positively disposed toward Hebrew language and literature, Neufeld opposed Yiddish as obstructive of Jewish progress. He favored a scientific study of Jewish culture as a way of bridging past and present. Opposed to the maskilim of Galicia, he considered Hasidism a positive force, hoping that it would encourage Polonization of the Jews. At the same time he opposed extreme assimilationist tendencies, regarding them as a break with talmudic tradition, which he saw as a nationalistic and political synthesis successful in preserving Jewish spiritual values. Presenting his ideas on education to Marquis Wielopolski, Neufeld called for the compulsory study of religion, along with Hebrew language, Jewish history, and the geography of Erez Israel. Neufeld was editor of the Jewish department of a general encyclopedia published by his friend Orgelbrand. He wrote a scholarly study of Napoleon's Sanhedrin and a pamphlet on the establishment of a consistory in Poland. Although he began the important task of translating the Bible into Polish, he had difficulty in obtaining permission to publish his work, the Catholic censors preferring that Jews should have to study the Bible in a Christian translation. Permission was finally granted on condition that the title page carry the notice that the translation was intended for Polish Jews. The Book of Genesis with both the Hebrew text and a Polish translation appeared in 1863, under the title PiMcioksiKg MojJesza dla myd\w-Polak\w.

שני שערים. השער השני בעברית ובפולנית. סידור כמנהג פולין, נוסח אשכנז. עברית עם תרגום לפולנית, עמוד מול עמוד, בספירת עמודים מקבילה. לכל כרך נוסף שער מיוחד. כרך א: חלקים א-ג. תפלות לימי החול, לשבת, לראש חודש, לשלוש רגלים, ימים נוראים, חנוכה, פורים ותעניות, סדר הזכרת נשמות. [6], קפו [צ"ל קפז], 195-188 ,187, [2], רמג, 248, [4], צח, 8 ,98 עמ'. כרך ב: חלק רביעי. תפלות יחיד. [3], לז, 37, [7] עמ'. [2], 79 ,78, [1] עמ' (נדפסו משמאל לימין): בפולנית, הסברים ופירוש על התפילה, עם שער מיוחד: Syfse Jeszenim Modly Starozytne Izraelitow na caly rok. Tekst Hebrejski z nowym przekladem Polskim z Komentarzem Moreh Derech ... przez Daniela Neufelda ...