Logic is a poor model of cause and effect.

A man walking is never in balance, but always correcting for imbalance.

Numbers are the product of counting. Quantities are the product of measurement. This means that numbers can conceivably be accurate because there is a discontinuity between each integer and the next. Between two and three there is a jump. In the case of quantity, there is no such jump; and because jump is missing in the world of quantity, it is impossible for any quantity to be exact. You can have exactly three tomatoes. You can never have exactly three gallons of water. Always quantity is approximate.

Desired substance, things, patterns, or sequences of experience that are in some sense "good" for the organism - items of diet, conditions of life, temperature, entertainment, sex, and so forth - are never such that more of the something is always better than less of the something. Rather, for all objects and experiences, there is a quantity that has optimum value. Above that quantity, the variable becomes toxic. To fall below that value is to be deprived.

The wise legislator will only rarely initiate a new rule of behaviour; more usually he will confine himself to affirming in law what has already become the custom of the people.

Multiple descriptions are better than one.

The world is indeed only a small tide pool; disturb one part and the rest is threatened.