Man must go back to nature for information.

"It is error only, and not truth, that shrinks from inquiry."

"Such is the irresistible nature of truth that all it asks, and all it wants, is the liberty of appearing."

"What we obtain too cheap, we esteem too lightly; it is the dearness only that gives everything value. Heaven knows how to put a proper price on its goods."

"'Tis the business of little minds to shrink; but he whose heart is firm, and whose conscience approves his conduct, will pursue his principles unto death."