Portrait of Epictetus - author of the quote: "“The condition and characteristic of an uninstructed person ..."

"“The condition and characteristic of an uninstructed person is this: he never expects from himself profit (advantage) nor harm, but from externals. The condition and characteristic of a philosopher is this: he expects all advantage and all harm from himself.”"

— Epictetus

The Condition And Characteristic Of An

“The condition and characteristic of an uninstructed person is this: he never expects from himself profit (advantage) nor harm, but from externals. The condition and characteristic of a philosopher is this: he expects all advantage and all harm from himself.”

— Epictetus
success
He who learns but does not think, is lost! He who thinks but does not learn is in great danger.
— Confucius
“But it seems to me to be an imperfection in things of beauty, and a weakness in man, if an explanation from the shallow-side has a destructive effect. The horror which we feel for Freudian interpretations is entirely due to our own barbaric or childish naivete, which believes that there can be heights without corresponding depths, and which blinds us to the really "final" truth that, when carried to extremes, opposites meet.”
— Carl Jung
“The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth.”
— Niels Bohr
“There are trivial truths and there are great truths. The opposite of a trivial truth is plainly false. The opposite of a great truth is also true.”
— Niels Bohr
“Independence is the recognition of the fact that yours is the responsibility of judgment and nothing can help you escape it—that no substitute can do your thinking—that the vilest form of self-abasement and self-destruction is the subordination of your mind to the mind of another, the acceptance of an authority over your brain, the acceptance of his assertions as facts, his say-so as truth, his edicts as middle-man between your consciousness and your existence.”
— Ayn Rand
“Thinking is man’s only basic virtue, from which all the others proceed. And his basic vice, the source of all his evils, is that nameless act which all of you practice, but struggle never to admit: the act of blanking out, the willful suspension of one’s consciousness, the refusal to think - not blindness, but the refusal to see; not ignorance, but the refusal to know. It is the act of unfocusing your mind and inducing an inner fog to escape the responsibility of judgment - on the unstated premise that a thing will not exist if only you refuse to identify it, that A will not be A so long as you do not pronounce the verdict ‘It is.”
— Ayn Rand