Mary Somerville quotes:

Nothing has afforded me so convincing a proof of the unity of the Deity as these purely mental conceptions of numerical and mathematical science which have been by slow degrees vouchsafed to man, and are still granted in these latter times by the Differential Calculus, now superseded by the Higher Algebra, all of which must have existed in that sublimely omniscient Mind from eternity.

No one at this time can duly estimate the importance of Mrs Marcet's scientific works.

Nothing has afforded me so convincing a proof of the unity of the Deity as these purely mental conceptions of numerical and mathematical science.

The moral disposition of the age appears in the refinement of conversation.

No circumstance in the natural world is more inexplicable than the diversity of form and color in the human race.

The most savage people are also the ugliest.