He is great who is what he is from Nature, and who never reminds us of others.

Nature is a mutable cloud, which is always and never the same.

In nature nothing can be given, all things are sold.

Why should we fear to be crushed by savage elements, we who are made up of the same elements?

Line in nature is not found; Unit and universe are round; In vain produced, all rays return; Evil will bless, and ice will burn.

A friend might well be reckoned the masterpiece of nature.

Nature encourages no looseness, pardons no errors.

When Nature has work to be done, she creates a genius to do it.

Nature magically suits a man to his fortunes, by making them the fruit of his character.

For the eye is fastened on the life, and slights the circumstance. Every chemical substance, every plant, every animal in its growth, teaches the unity of cause, the variety of appearance.