It is hard for an empty bag to stand upright.
Dangerous, therefore, is it to take shelter under a tree, during a thunder-gust. It has been fatal to many, both men and beasts.
Since thou are not sure of a minute, throw not away an hour.
A father's a treasure; a brother's a comfort; a friend is both.
Where sense is wanting, everything is wanting.
The foundation of all happiness in thinking rightly.