The fact which interests us most is the life of the naturalist. The purest science is still biographical. Nothing will dignify and elevate science while it is sundered so wholly from the moral life of its devotee.

Oh to reach the point of death and realize one has not lived at all.

I want the flower and fruit of a man; that some fragrance be wafted over from him to me, and some ripeness flavor our intercourse.

Unjust laws exist: shall we be content to obey them, or shall we endeavor to amend them, and obey them until we have succeeded, or shall we transgress them at once?

He who cannot read is worse than deaf and blind, is yet but half alive, is still-born.

What would human life be without forests, those natural cities?

Time is like a handful of sand - the tighter you grasp it, the faster it runs through your fingers.