“Only by taking infinitesimally small units for observation (the differential of history, that is, the individual tendencies of men) and attaining to the art of integrating them (that is, finding the sum of these infinitesimals) can we hope to arrive at the laws of history.”

“that in every individual a spiritual element is manifested that gives life to all that exists, and that this spiritual element strives to unite with everything of a like nature to itself, and attains this aim through love.”

“History would be a wonderful thing – if it were only true.”

“If there is a God and future life, there is truth and good, and man's highest happiness consists in striving to attain them. We must live, we must love, and we must believe that we live not only today on this scrap of earth, but have lived and shall live”

“Kings are the slaves of history.”

“Art should cause violence to be set aside and it is only art that can accomplish this.”

“The subject of history is the life of peoples and mankind.”