The learned understand the reason of art; the unlearned feel the pleasure.

Consequently the student who is devoid of talent will derive no more profit from this work than barren soil from a treatise on agriculture.

Men, even when alone, lighten their labors by song, however rude it may be.

It seldom happens that a premature shoot of genius ever arrives at maturity.

Medicine for the dead is too late

Where evil habits are once settled, they are more easily broken than mended.

Whilst we deliberate how to begin a thing, it grows too late to begin it.