A great many people think they are thinking when they are merely rearranging their prejudices.
Act as if what you do makes a difference. It does.
Whatever universe a professor believes in must at any rate be a universe that lends itself to lengthy discourse. A universe definable in two sentences is something for which the professorial intellect...
Most people, probably, are in doubt about certain matters ascribed to their past. They may have seen them, may have said them, done them, or they may only have dreamed or imagined they did so.
Time itself comes in drops.
In order to disprove the assertion that all crows are black, one white crow is sufficient.
To give up pretensions is as blessed a relief as to get them ratified.
The deepest principle in human nature is the craving to be appreciated.
It is well for the world that in most of us, by the age of thirty, the character has set like plaster, and will never soften again.
There are no differences but differences of degree between different degrees of difference and no difference.
Philosophy lives in words, but truth and fact well up into our lives in ways that exceed verbal formulation.
To change ones life: Start immediately. Do it flamboyantly.
How to gain, how to keep, how to recover happiness is in fact for most men at all times the secret motive of all they do, and of all they are willing to endure.
Habit is the enormous flywheel of society its most precious conservative agent. There is no more miserable human being than one in whom nothing is habitual but indecision. Full half the time of such...
Pessimism leads to weakness, optimism to power.
This life is worth living, we can say, since it is what we make it.
It is our attitude at the beginning of a difficult task which, more than anything else, will affect its successful outcome.
Common sense and a sense of humor are the same thing, moving at different speeds. A sense of humor is just common sense, dancing.
The greatest discovery of my generation is that a human being can alter his life by altering his attitudes.
Action may not bring happiness but there is no happiness without action.