915 Quotes About Logic

One can ask why the I has to appear in the cogito {Descartes’ argument “I think therefore I am.}, since the cogito, if used rightly, is the awareness of pure consciousness, not directed at any fact or action. In fact the I is not necessary here, since it is never united directly to consciousness. One can even imagine a pure and self-aware consciousness which thinks of itself as impersonal spontaneity.

Unfortunately, fools think that shouting makes their arguments convincing, or more convincing.

It is better to be roughly right than precisely wrong.

Visionary decision-making happens at the intersection of intuition and logic.

It's frustrating that logic isn't always enough.

Now we’ve a real intellectual impasse. Our reason, which is supposed to make things more intelligible, seems to be making them less intelligible, and when reason thus defeats its own purpose something has to be changed in the structure of our reason itself.

A computer does not substitute for judgment any more than a pencil substitutes for literacy. But writing ability without a pencil isno particular advantage.

In the history of ideas, it's repeatedly happened that an idea, developed in one area for one purpose, finds an unexpected application elsewhere. Concepts developed purely for philosophy of mathematics turned out to be just what you needed to build a computer. Statistical formulae for understanding genetic change in biology are now applied in both economics and in programming.

Though I do not believe in the order of things, still the sticky little leaves that come out in the spring are dear to me, the blue sky is dear to me, some people are dear to me, whom one loves sometimes, would you believe it, without even knowing why; some human deeds are dear to me, which one has perhaps long ceased believing in, but still honors with one's heart, out of old habit..."--Ivan Karamazov