What an admirable training is science for the more active warfare of life! Indeed, the unchallenged bravery which these studies imply, is far more impressive than the trumpeted valor of the warrior.

All expression of truth does at length take this deep ethical form.

Our life is frittered away by detail... simplify, simplify.

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?

Unless the human race perspire more than I do, there is no occasion to live by the sweat of their brow. If men cannot get on without money (the smallest amount will suffice), the truest method of earning it is by working as a laborer at one dollar per day. You are least dependent so; I speak as an expert, having used several kinds of labor.

As a single footstep will not make a path on the earth, so a single thought will not make a pathway in the mind. To make a deep physical path, we walk again and again. To make a deep mental path, we must think over and over the kind of thoughts we wish to dominate our lives.

The walls that fence our fields, as well as modern Rome, and not less the Parthenon itself, are all built of ruins.