I am bound to add that the excess in too little has ever proved in me more dangerous than the excess in too much; the last may cause indigestion, but the first causes death. ↗
Marvelous is the power which can be exercised, almost unconsciously, over a company, or an individual, or even upon a crowd by one person gifted with good temper, good digestion, good intellects, and good looks. ↗
In Darwin's time all of biology was a black box: not only the cell, or the eye, or digestion, or immunity, but every biological structure and function because, ultimately, no one could explain how biological processes occurred. ↗