natural principles ineradicable by custom, there are also some customs
opposed to nature, ineradicable by nature, or by a second custom. This
depends on disposition.


93

Parents fear lest the natural love of their children may fade away. What
kind of nature is that which is subject to decay? Custom is a second
nature which destroys the former.[58] But what is nature? For is custom
not natural? I am much afraid that nature is itself only a first custom,
as custom is a second nature.


94

The nature of man is wholly natural, _omne animal_.[59]

There is nothing he may not make natural; there is nothing natural he
may not lose.


95

Memory, joy, are intuitions; and even mathematical propositions become
intuitions, for education produces natural intuitions, and natural
intuitions are erased by education.


96