Our minds must relax: they will rise better and keener after rest. Just as you must not force fertile farmland, as uninterrupted productivity will soon exhaust it, so constant effort will sap our mental vigour, while a short period of rest and relaxation will restore our powers. Unremitting effort leads to a kind of mental dullness and lethargy.
The things that are essential are acquired with little bother; it is the luxuries that call for toil and effort.
There is nothing which persevering effort and unceasing and diligent care cannot accomplish.
To make a commencement requires a mental effort.
