Everything that depends on the action of nature is by nature as good as it can be.

There is only one condition in which we can imagine managers not needing subordinates, and masters not needing slaves. This condition would be that each (inanimate) instrument could do its own work.

Health is a matter of choice, not a mystery of chance

Any change of government which has to be introduced should be one which men, starting from their existing constitutions, will be both willing and able to adopt, since there is quite as much trouble in the reformation of an old constitution as in the establishment of a new one, just as to unlearn is as hard as to learn.

It is impossible, or not easy, to alter by argument what has long been absorbed by habit

The appropriate age for marrige is around eighteen and thirty-seven for man

Personal beauty requires that one should be tall; little people may have charm and elegance, but beauty-no.