Evolution is not a force but a process; not a cause but a law.
It is not enough to do good; one must do it the right way.
You have not converted a man because you have silenced him.
The great business of life is to be, to do, to do without, and to depart.
Those who would treat politics and morality apart will never understand the one or the other.
You can not demonstrate an emotion or prove an aspiration.
Literature--the most seductive, the most deceiving, the most dangerous of professions.
No man can climb out beyond the limitations of his own character.
A great interpreter of life ought not himself to need interpretation.
The most frightful idea that has ever corroded human nature--the idea of eternal punishment.
Where it is a duty to worship the sun it is pretty sure to be a crime to examine the laws of heat.
Simplicity of character is no hindrance to subtlety of intellect.
Every man of us has all the centuries in him.
In every man's heart there is a secret nerve that answers to the vibrations of beauty.
When you sell a man a book you don't sell him just twelve ounces of paper and ink and glue--you sell him a whole new life.
The unluckiest insolvent in the world is the man whose expenditure of speech is too great for his income of ideas.
My theology, briefly, is that the universe was dictated but not signed.
You have not converted a man because you have silenced him.
There are three ingredients to the good life; learning, earning, and yearning.
There is nothing like returning to a place that remains unchanged to find the ways in which you yourself have altered.
In every man's heart there is a secret nerve that answers to the vibrations of beauty.
A human being is an ingenious assembly of portable plumbing.
You have not converted a man because you have silenced him.
No one appreciates the very special genius of your conversation as much as the dog does.
Man makes a great fuss about this planet which is only a ballbearing in the hub of the universe.