“There is only one good, knowledge, and one evil, ignorance.”
Socrates · reported by Diogenes Laertius
This statement is an encouragement toward intellectual independence. It suggests that a person cannot discover who they truly are by borrowing the conclusions of others or drifting along on received opinion. Genuine self-knowledge requires the effort of original thought, of sitting with questions rather than grabbing ready-made answers. The deeper implication is that thinking and being are not separate activities; the act of reasoning is itself how identity is formed and clarified.
Socrates wrote nothing himself, so this line, like most things attributed to him, is passed down through the tradition that grew around his memory rather than from a verified written source. It reflects the spirit of Socratic inquiry found throughout the Platonic dialogues, where Socrates consistently pushes his companions to examine their own beliefs rather than simply accept what they have been told. The instruction to think for oneself was quietly radical in a society where tradition and civic conformity held great authority.
Socrates was an Athenian philosopher of the fifth century BCE who shaped the course of Western philosophy without writing a single word. He spent his life in public conversation, testing ideas and exposing contradictions through careful questioning. His approach, later called the Socratic method, treated every assumption as something worth examining. His influence was so profound that later thinkers divided the history of Greek philosophy into before and after Socrates. He was condemned to death by Athens in 399 BCE and chose to accept the sentence rather than abandon his principles.
“There is only one good, knowledge, and one evil, ignorance.”
Socrates · reported by Diogenes Laertius
“I know that I am intelligent, because I know that I know nothing.”
Socrates · attributed via Plato, Apology
“The unexamined life is not worth living.”
Socrates · Plato, Apology
“Believe you can and you're halfway there.”
Theodore Roosevelt · attributed
“Do not wait to strike till the iron is hot, but make it hot by striking.”
William Butler Yeats · attributed
“It always seems impossible until it's done.”
Nelson Mandela · attributed
“Many of life's failures are people who did not realize how close they were to success when they gave up.”
Thomas Edison · attributed
“Don't watch the clock; do what it does. Keep going.”
Sam Levenson · attributed
“The future belongs to those who believe in the beauty of their dreams.”
Eleanor Roosevelt · attributed
“Our greatest glory is not in never falling, but in rising every time we fall.”
Confucius · attributed
“Whether you think you can, or you think you can't, you're right.”
Henry Ford · attributed
“It does not matter how slowly you go as long as you do not stop.”
Confucius · attributed