When any real progress is made, we unlearned and learn anew what we thought we knew before.

Probably if our lives were more conformed to nature, we should not need to defend ourselves against her heats and colds, but findher our constant nurse and friend, as do plants and quadrupeds.

I should fear the infinite power and inflexible justice of the almighty mortal hardly as yet apotheosized, so wholly masculine, with no sister Juno, no Apollo, no Venus, nor Minerva, to intercede for me, thumoi phileousa te, kedomene te.

You only need sit still long enough in some attractive spot in the woods that all its inhabitants may exhibit themselves to you by turns.

Only he is successful in his business who makes that pursuit which affords him the highest pleasure sustain him.

Cast your whole vote, not a strip of paper merely, but your whole influence.

What is the use of going right over the old track again? There is an adder in the path which your own feet have worn. You must make tracks into the Unknown.