All our thoughts and concepts are called up by sense-experiences and have a meaning only in reference to these sense-experiences. On the other hand, however, they are products of the spontaneous activity of our minds; they are thus in no wise logical consequences of the contents of these sense-experiences. If, therefore, we wish to grasp the essence of a complex of abstract notions we must for the one part investigate the mutual relationships between the concepts and the assertions made about them; for the other, we must investigate how they are related to the experiences.
The man of system is apt to be very wise in his own conceit. In the great chess board of human society, every single piece has a principle of motion of its own altogether different from that which the legislature might choose to impress upon it
Each of our passions, even love, has a stomach that must not be overloaded. We must in everything write the word 'finis' in time; we must restrain ourselves, when it becomes urgent; we must draw the bolt on the appetite, play a fantasia on the violin, then break the strings with our own hand. The Wise man is he who knows when and how to stop.
Among the wise and high-minded people who in self-respecting and genuine fashion strive earnestly for peace, there are the foolish fanatics always to be found in such a movement and always discrediting it the men who form the lunatic fringe in all reform movements.
Without goodness a man cannot endure adversity for long, nor can he enjoy prosperity for long. The good man is naturally at ease with goodness. The wise man cultivates goodness for its advantage.
When Vanity kissed Vanity, a hundred happy Junes ago, he pondered o'er her breathlessly, and, that all men might ever know, he rhymed her eyes with life and death: "Thru Time I'll save my love!" he said. . . yet Beauty vanished with his breath, and, with her lovers, she was dead. . . -Ever his wit and not her eyes, ever his art and not her hair: "Who'd learn a trick in rhyme, be wise and pause before his sonnet there". . . So all my words, however true, might sing you to a thousandth June, and no one ever know that you were Beauty for an afternoon.
The fool sees naught but folly; and the madman only madness. Yesterday I asked a foolish man to count the fools among us. He laughed and said, "This is too hard a thing to do, and it will take too long. Were it not better to count only the wise?"
[Heraclitus] did not require humans or their sort of knowledge, since everything into which one may inquire he despises [as being] in contrast [to his own] inward-turning wisdom. [To him] all learning from others is a sign of nonwisdom, because the wise man focuses his vision on his own intelligence.
People do not naturally become morally excellent or practically wise. They become so, if at all, only as the result of lifelong personal and community effort.