Drive out nature with a pitchfork, and she will always come back. 

A tree’s a tree. How many more do you need to look at?

Those things are better which are perfected by nature than those which are finished by art.

When you have only two pennies left in the world, buy a loaf of bread with one, and a lily with the other.

Nature’s rules have no exceptions.

We never are definitely right; we can only be sure we are wrong.

Men argue, nature acts.