The greater the circle of light, the greater the boundary of darkness…

It is surely a pure delight to know, how and by what processes this earth is clothed with verdure and life, how the clouds, mists and rain are formed, what causes all the changes of this terrestrial system of things, and by what divine …

Every new discovery may be considered as a new species of manufacture, awakening moral industry and sagacity, and employing, as it were, new capital of mind.

A sacred spark created by his breath, The immortal mind of man his image bears; A spirit living 'midst the forms of death, Oppressed, but not subdued, by mortal cares.

Fortunately science, like that nature to which it belongs, is neither limited by time nor by space. It belongs to the world, and is of no country and of no age. The more we know, the more we feel our ignorance; the more we feel how much …

an art without principles, the beginning of which was deceit, the progress delusion, and the end poverty.

The true chemical philosopher sees good in all the diversified forms of the external world.