The value and rank of every art is in proportion to the mental labor employed in it, or the mental pleasure in producing it.

Excellence is never granted to man but as the reward of labor. It argues no small strength of mind to persevere in habits of industry without the pleasure of perceiving those advances, which, like the hand of a clock, whilst they make hourly approaches to their point, yet proceed so slowly as to escape observation.

And he who does not know himself does not know others, so it may be said with equal truth, that he who does not know others knows himself but very imperfectly.

The value and rank of every art is in proportion to the mental labor employed in it, or the mental pleasure in producing it.

I am convinced that this is the only means of advancing science, of clearing the mind from a confused heap of contradictory observations, that do but perplex and puzzle the Student, when he compares them, or misguide him if he gives himself up to their authority; but bringing them under one general head, can alone give rest and satisfaction to an inquisitive mind.

Simplicity is an exact mediumbetween too little and too much.

Every art, like our own, has in its composition fluctuating as well as fixed principles. It is an attentive inquiry into their difference that will enable us to determine how far we are influenced by custom and habit, and what is fixed in the nature of things.