A man’s maturity: that is to have rediscovered the seriousness he possessed as a child at play.
FRIEDRICH NIETZSCHE, Beyond Good and Evil
Maturity ... is a bitter disappointment for which no remedy exists.
KURT VONNEGUT, JR., Cat's Cradle
That the world can be improved and yet must be celebrated as it is are contradictions. The beginning of maturity may be the recognition that both are true.
WILLIAM STOTT, Documentary Expression and Thirties America
A mature person is one who does not think only in absolutes, who is able to be objective even when deeply stirred emotionally, who has learned that there is both good and bad in all people and all things, and who walks humbly and deals charitably with the circumstances of life, knowing that in this world no one is all-knowing and therefore all of us need both love and charity.
ELEANOR ROOSEVELT, You Learn by Living
There is no such thing as maturity. There is instead an ever-evolving process of maturing. Because when there is a maturity, there is a conclusion and a cessation. That's the end. That's when the coffin is closed.
BRUCE LEE, The Warrior Within: The Philosophies of Bruce Lee
I believe that maturity is not an outgrowing, but a growing up: that an adult is not a dead child, but a child who survived.
URSULA K. LE GUIN, The Language of the Night: Essays on Fantasy and Science Fiction
Age is a very high price to pay for maturity.
TOM STOPPARD, Rosencrantz and Guildenstern Are Dead