What are the most brilliant of our chymical discoveries compared with the invention of fire and the metals?

I see before me the statue of a celebrated minister, who said that confidence was a plant of slow growth. But I believe, however gradual may be the growth of confidence, that of credit requires still more time to arrive at maturity.

Great men should think of opportunity and not of time. That is the excuse of feeble and puzzled spirits.

Great revolutions, whatever may be their causes, are not lightly commenced, and are not concluded with precipitation.

The world is devoted to physical science, because it believes theses discoveries will increase its capacity of luxury and self-indulgence. But the pursuit of science only leads to the insoluble.

A great person is one who affects the mind of their generation.

All is mystery; but he is a slave who will not struggle to penetrate the dark veil.