Lazarus' first publication, "Die Sittliche Berechtigung Preussens in Deutschland" (Berlin, 1850), appealed to the public at large.
Among his shorter philosophical and historical writings may be mentioned: "Ueber den Ursprung der Sitten," 1860; "Ueber die Ideen in der Geschichte," 1861; "Zur Lehre von den Sinneserscheinungen," 1867; "Ein Psychologischer Blick in Unsere Zeit," 1872; "Ideale Fragen," 1878; "Erziehung und Geschichte," 1881; and "Ueber die Reize des Spiels," 1883.