A cell is a complex structure, with its investing membrane, nucleus, and nucleolus.
Notes from Wikiquote
(Detractors sometimes claim Darwin thought that the cell was an undifferentiated mass of protoplasm. This quote proves otherwise.)
As for a future life, every man must judge for himself between conflicting vague probabilities.
A man who dares to waste one hour of time has not discovered the value of life.
Even insects express anger, terror, jealousy, and love by their stridulation.
Quote text and notes from Wikiquote: Charles Darwin (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.