We must consider the distinctive characters and the general nature of plants from the point of view of their morphology, their behavior under external conditions, their mode of generation, and the whole course of their life.

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.

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

Remember that life holds out many pleasing deceits to us by the vanity of glory; for that when we are beginning to live, then we are dying. There is, therefore, nothing more profitless than ambition.

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

Beauty is a mute deception.

The sound of the flute will cure epilepsyand sciatic gout.

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

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.

Our costliest expenditure is time.