Every man has a lurking wish to appear considerable in his native place.

The botanist looks upon the astronomer as a being unworthy of his regard; and he that is glowing great and happy by electrifying a bottle wonders how the world can be engaged by trifling prattle about war and peace.

I am far from any intention to limit curiosity, or confine the labours of learning to arts of immediate and necessary use. It is only from the various essays of experimental industry, and the vague excursions of mind set upon discovery, that any advancement of knowledge can be expected; and though many must be disappointed in their labours, yet they are not to be charged with having spent their time in vain; their example contributed to inspire emulation, and their miscarriage taught others the way to success.

Knowledge is more than equivalent to force. The master of mechanics laughs at strength.

Exactness is first obtained, and afterwards elegance. But diction, merely vocal, is always in its childhood. As no man leaves his eloquence behind him, the new generations have all to learn. There may possibly be books without a polished language, but there can be no polished language without books.

Exercise is labor without weariness.

There is certainly no greater happiness than to be able to look back on a life usefully and virtuously employed, to trace our own progress in existence, by such tokens as excite neither shame nor sorrow.