Our costliest expenditure is time.

True friends visit us in prosperity only when invited, but in adversity they come without invitation.

Alcmaeon was the first to define the difference between man and animals, saying that man differs from the latter in the fact that he alone has the power of understanding.

Love is the affection of a mind that has nothing better to engage it.

Waste of time is the most extravagant and costly of all expenses.

Slovenliness is a lazy and beastly negligence of a man's own person, whereby he becomes so sordid as to be offensive to those about him.

Time is the most valuable thing a man can spend.