The learned understand the reason of art; the unlearned feel the pleasure.
We must form our minds by reading deep rather than wide.
When defeat is inevitable, it is wisest to yield.
Consequently the student who is devoid of talent will derive no more profit from this work than barren soil from a treatise on agriculture.
The obscurity of a writer is generally in proportion to his incapacity.
We excuse our sloth under the pretext of difficulty.