Able Quote by Friedrich Nietzsche

The only thing a man knows is himself.

— Alexander Smith

Each of us when he appears before his fellows is clothed in a certain dignity. But every man knows what unconfessable things pass within…

— Luigi Pirandello

The man who thinks he knows does not yet know what knowing is

— Michel de Montaigne

If a man knew anything, he would sit in a corner and be modest; but he is such an ignorant peacock, that he goes…

— Ralph Waldo Emerson

“No knowledge comes from outside; it is all inside. What we say a man "knows", should, in strict psychological language, be what he "discovers"…

— Swami Vivekananda

Man knows himself only insofar as he knows the world, becoming aware of it if only within himself, and of himself self only within…

— Johann Wolfgang von Goethe

No man learns to know his inmost nature by introspection, for he rates himself sometimes too low, and often too high, by his own…

— Johann Wolfgang von Goethe

Man is the creature that cannot emerge from himself, that knows his fellows only in himself; when he asserts the contrary, he is lying.

— Marcel Proust

One can ever assume to be what he is not, and to conceal what he is.

— Sallust

Man can embody truth but he cannot know it.

— William Butler Yeats

Man may be defined as the animal that can say ''I,'' that can be aware of himself as a separate entity.

— Erich Fromm

A person's true nature will reveal itself despite disguise.

— Aesop