The seeds of knowledge may be planted in solitude, but must be cultivated in public.

Such is the uncertainty of human affairs, that security and despair are equal follies; and as it is presumption and arrogance to anticipate triumphs, it is weakness and cowardice to prog-nosticate miscarriages.

He that voluntarily continues in ignorance, is guilty of all the crimes which ignorance produces.

An Italian philosopher said that "time was his estate"; an estate indeed which will produce nothing without cultivation, but will always abundantly repay the labors of industry, and generally satisfy the most extensive desires, if no part of it be suffered to lie in waste by negligence, to be overrun with noxious plants, or laid out for show rather than for use.

Life is not long, and too much of it must not pass in idle deliberation how it shall be spent.

Curiosity is, in great and generous minds, the first passion and the last; and perhaps always predominates in proportion to the strength of the contemplative faculties. He who easily comprehends all that is before him, and soon exhausts any single subject, is always eager for new inquiries; and in proportion as the intellectual eye takes in a wider prospect, it must be gratified with variety, by more rapid flights and bolder excursions.

Philosophers there are who try to make themselves believe that this life is happy; but they believe it only while they are saying it, and never yet produced conviction in a single mind.