To avoid criticism, do nothing, say nothing, and be nothing.
This will never be a civilized country until we spend more money for books than we do for chewing gum.
The man who knows it can't be done counts the risk, not the reward.
There is no failure except in no longer trying.
The object of teaching a child is to enable him to get along without his teacher.
The thing we fear we bring to pass.
The supernatural is the natural not yet understood.
The recipe for perpetual ignorance is: Be satisfied with your opinions and content with your knowledge.
The reason men oppose progress is not that they hate progress, but that they love inertia.
Our desires always disappoint us; for though we meet with something that gives us satisfaction, yet it never thoroughly answers our expectation.
There is something that is much more scarce, something finer far, something rarer than ability. It is the ability to recognize ability.
It's pretty hard to be efficient without being obnoxious.
If pleasures are greatest in anticipation, just remember that this is also true of trouble.
Fear clogs; faith liberates.
If you can't answer a man's arguments, all is not lost; you can still call him vile names.