Inanis impetus.

Antagonism that achieves nothing

Lunarem noctu, ut speculum,[1] canis inspicit orbem:
Seque videns, alium credit inesse canem,[2]
Et latrat: sed frustra agitur vox irritas ventis,
Et peragit cursus surda Diana suos.[3]

A dog at night is looking into the moon’s disk as into a mirror and seeing himself, thinks there is another dog there; and he barks - but the sound is carried away, ineffectual, on the winds. Diana, unhearing, pursues her course.

Philautia.

Self-satisfaction.

Quòd nimium tua sorma [=forma] tibi Narcisse placebat,
In florem, & noti est versa stuporis olus.[1]
Ingenii est marcor, cladesque philautia, doctos
Quae pessum plures datque deditque viros,
Qui veterum abiecta methodo, nova dogmata quaerunt
Nilque suas praeter tradere phantasias.

Because your beauty gave you too much satisfaction, Narcissus, it was turned both into a flower and into a plant of acknowledged insensibility. Self-satisfaction is the rot and destruction of the mind. Learned men in plenty it has ruined, and ruins still, men who cast off the method of teachers of old and aim to pass on new doctrines, nothing more than their own imaginings.