Quote by William James
It is well for the world that in most of us, by the age of thirty, the character has set like plaster, and will never soften again.
Summary
This quote suggests that by the age of thirty, most people have developed a firm and unchangeable personality. It implies that as individuals grow older, they become less open to change and less likely to alter their core values and beliefs. The quote presents this state as a positive thing for the world, implying that stability and consistency in character contribute to a more harmonious society.