C.N. Douglas, comp. Forty Thousand Quotations: Prose and Poetical. 1917.
Levity
Levity of behaviour is the bane of all that is good and virtuous.
Seneca.
There is always some levity even in excellent minds; they have wings to rise, and also to stray.
Joubert.
In infants, levity is a prettiness; in men a shameful defect; but in old age, a monstrous folly.
La Rochefoucauld.
The lively and mercurial are as open books, with the leaves turned down at the notable passages. Their souls sit at the windows of their eyes, seeing and to be seen.
Bovee.