Quotes about ideas

Gods die. And when they truly die they are unmourned and unremembered. Ideas are more difficult to kill than people, but they can be killed, in the end.

Ideas should be neutral. But man animates them with his passions and folly. Impure and turned into beliefs, they take on the appearance of reality. The passage from logic is consummated. Thus are born ideologies, doctrines, and bloody farce.

He will not be feted as a charming man, but every one will like him without knowing why; no one will praise his intellect, but every one will be ready to make him the judge between men of intellect; his own intelligence will be clear and limited, his mind will be accurate, and his judgment sane. As he never runs after new ideas, he cannot pride himself on his wit. I have convinced him that all wholesome ideas, ideas which are really useful to mankind, were among the earliest known, that in all times they have formed the true bonds of society, and that there is nothing left for ambitious minds but to seek distinction for themselves by means of ideas which are injurious and fatal to mankind.

At first our pupil had merely sensations, now he has ideas; he could only feel, now he reasons. For from the comparison of many successive or simultaneous sensations and the judgment arrived at with regard to them, there springs a sort of mixed or complex sensation which I call an idea. The way in which ideas are formed gives a character to the human mind. The mind which derives its ideas from real relations is thorough; the mind which relies on apparent relations is superficial. He who sees relations as they are has an exact mind; he who fails to estimate them aright has an inaccurate mind; he who concocts imaginary relations, which have no real existence, is a madman; he who does not perceive any relation at all is an imbecile. Clever men are distinguished from others by their greater or less aptitude for the comparison of ideas and the discovery of relations between them. Simple ideas consist merely of sensations compared one with another. Simple sensations involve judgments, as do the complex sensations which I call simple ideas. In the sensation the judgment is purely passive; it affirms that I feel what I feel. In the percept or idea the judgment is active; it connects, compares, it discriminates between relations not perceived by the senses. That is the whole difference; but it is a great difference. Nature never deceives us; we deceive ourselves.

Science is a cemetery of dead ideas, even though life may issue from them.

Thinking, meditating, imagining are not anomalous acts – they are the normal respiration of the intelligence. To glorify the occasional exercise of that function, to treasure beyond price ancient and foreign thoughts, to recall with incredulous awe what some doctor universalis thought, is to confess our own languor, or our own barbarie. Every man should be capable of all ideas, and I believe that in the future he shall be.

There's nothing clever that hasn't been thought of before — you've just got to try to think it all over again.

The time of big theories was the time of big results. In the era of sentiment and fine words, at the end of the eighteenth century, men were really robust and effective.

He was suddenly struck by an idea so brilliant that he was quite sure it could not possibly work.