“There are many truths of which the full meaning cannot be realized until personal experience has brought it home
“Three-quarters of the sicknesses of intelligent people come from their intelligence. They need at least a doctor who can understand this sickness
“The greatest discovery of my generation is that a human being can alter his life by altering his attitudes
“What is the good of drawing conclusions from experience? I don't deny we sometimes draw the right conclusions, but don't we just as often draw the wrong ones?
“The things we really know are not the things we have merely read about or heard about, but the things we have lived, have experienced, have been sensible of
“Before I got married I had six theories about bringing up children; now I have six children and no theories.