“仁者见仁，智者见智。”  “The benevolent sees benevolence; the wise sees wisdom.” – 孔子 Confucius

“To know is to know nothing. That is the true meaning of knowledge.” – Socrates

“Knowledge is true opinion.” – Plato

“为学日益。” “Learning consists of daily accumulating.” 老子 Laozi

“Learn as much by writing as by reading.” – John Emerich Edward Dalberg-Acton

“Man is the most intelligent of the animals, and the most silly.” – Diogenes

“Consult your conscience, rather than popular opinion.” – Publius Syrus

“Thinking: the talking of the soul with itself.” – Plato

“I am not ashamed to confess that I am ignorant of what I do not know. “ – Marcus Tullius Cicero

“Cogito ergo sum.” ” I think, therefore I am.” – René Descartes

“Je ne puis concevoir l’homme sans pensée. Ce serait une pierre ou une brute.” – Blaise Pascal

“Celui qui veut que son opinion trouve crédit doit l’énoncer froidement et sans passion.” – Arthur Schopenhauer

“La critique doit être partiale, passionnée, politique, c’est-à-dire faire à un point de vue exclusif, mais au point de vue qui ouvre le plus d’horizon.” – Charles Baudelaire

“Make it your habit not to be critical about small things.” – Edward Everett Hale

“If everyone is thinking alike, then somebody isn’t thinking.” – George S. Patton