Those who lack all idea that it is possible to be wrong can learn nothing except know-how.

There are many matters and many circumstances in which consciousness is undesirable and silence is golden, so that secrecy can be used as a marker to tell us that we are approaching the holy.

In the transmission of human culture, people always attempt to replicate, to pass on to the next generation the skills and values of the parents, but the attempt always fails because cultural transmission is geared to learning, not DNA.

Science, like art, religion, commerce, warfare, and even sleep, is based on presuppositions.

Some tools of thought are so blunt that they are almost useless; others are so sharp that they are dangerous. But the wise man will have the use of both kinds.

Logic can often be reversed, but the effect does not precede the cause.

To think straight, it is advisable to expect all qualities and attributes, adjectives, and so on to refer to at least two sets of interactions in time.