A woman is no sooner ours than we are no longer hers.

No man is exempt from saying silly things; the mischief is to say them deliberately.

One man may have some special knowledge at first-hand about the character of a river or a spring, who otherwise knows only what everyone else knows. Yet to give currency to this shred of information, he will undertake to write on the whole science of physics. From this fault many great troubles spring.

Let every foot have its own shoe.

Cowardice is the mother of cruelty.

Nothing is so firmly believed as what we least know.

Since I would rather make of him an able man than a learned man, I would also urge that care be taken to choose a guide with a well-made rather than a well-filled head.