Wit implies hatred or contempt of folly and crime, produces its effects by brisk shocks of surprise, uses the whip of scorpions and the branding-iron, stabs, stings, pinches, tortures, goads, teases, corrodes, undermines.

Men educate each other in reason by contact or collision, and keep each other sane by the very conflict of their separate hobbies. Society as a whole is the deadly enemy of the particular crotchet of each, and solitude is almost the only condition in which the acorn of conceit can grow to the oak of perfect self-delusion.

Nature does not capriciously scatter her secrets as golden gifts to lazy pets and luxurious darlings, but imposes tasks when she presents opportunities, and uplifts him whom she would inform. The apple that she drops at the feet of Newton is but a coy invitation to follow her to the stars.

Books are lighthouses erected in the great sea of time.

In most old communities there is a common sense even in sensuality. Vice itself gets gradually digested into a system, is amenable to certain laws of conventional propriety and honor, has for its object simply the gratification of its appetites, and frowns with quite a conservative air on all new inventions, all untried experiments in iniquity.

Knowledge, like religion, must be experienced in order to be known.

Of the three prerequisites of genius; the first is soul; the second is soul; and the third is soul.