"The things you fear are undefeatable, not by their nature, but by your approach"

"Nature and wisdom never are at strife"

"The sound of the human voice is the best of nature but only if it comes out from the feelings"

"Where is human nature so weak as in the bookstore?"

"We cannot command Nature except by obeying her"

"He loves nature in spite of what it did to him"

"Art is not merely an imitation of the reality of nature, but in truth a metaphysical supplement to the reality of nature, placed alongside thereof for its conquest"

"He is richest who is content with the least, for content is the wealth of nature"

"Nature is a mutable cloud which is always and never the same"

"There are more men ennobled by study than by nature"

"One of the first conditions of happiness is that the link between Man and Nature shall not be broken"