The latest gospel in this world is, know thy work and do it.
The barrenest of all mortals is the sentimentalist.
History is the essence of innumerable biographies.
A laugh, to be joyous, must flow from a joyous heart, for without kindness, there can be no true joy.
Man is a tool-using animal. Without tools he is nothing, with tools he is all.
Thou fool! Nature alone is antique, and the oldest art a mushroom; that idle crag thou sittest on is six thousand years of age.