The more reasonable a student was in mathematics, the more unreasonable she was in the affairs of real life, concerning which fewtrustworthy postulates have yet been ascertained.

A broken heart is a very pleasant complaint for a man in London if he has a comfortable income.

To a mathematician the eleventh means only a single unit: to the bushman who cannot count further than his ten fingers it is an incalculable myriad.

The reasonable man adapts himself to the world; the unreasonable one persists to adapt the world to himself. Therefore all progress depends on the unreasonable man.

Never repeat old grievances.

The art of government is the organisation of idolatry.

Every man is a revolutionist concerning the thing he understands. For example, every person who has mastered a profession is a skeptic concerning it, and consequently a revolutionist.