Scientific addresses (1870)

• Knowledge once gained casts a faint light beyond its own immediate boundaries.
  • On the Methods and Tendencies of Physical Investigation, p. 7

Fragments of Science, Vol. II (1879)

• Life is a wave, which in no two consecutive moments of its existence is composed of the same particles.
  • Vitality

• The mind of man may be compared to a musical instrument with a certain range of notes, beyond which in both directions we have an infinitude of silence.
  • Matter and Force

• The brightest flashes in the world of thought are incomplete until they have been proved to have their counterparts in the world of fact.
  • Scientific Materialism

• It is as fatal as it is cowardly to blink facts because they are not to our taste.
  • Science and Man

• Charles Darwin, the Abraham of scientific men — a searcher as obedient to the command of truth as was the patriarch to the command of God.
  • Science and Man

• Superstition may be defined as constructive religion which has grown incongruous with intelligence.
  • Science and Man

• Religious feeling is as much a verity as any other part of human consciousness; and against it, on the subjective side, the waves of science beat in vain.
  • Professor Virchow and Evolution