Private passions tire and exhaust themselves, public ones never.
Ever more people today have the means to live, but no meaning to live for.
It is no measure of health to be well adjusted to a profoundly sick society.
What sunshine is to flowers, smiles are to humanity. These are but trifles, to be sure; but scattered along life's pathway, the good they do is inconceivable.
Man has the power to act as his own destroyer - and that is the way he has acted through most of his history.
The first human who hurled an insult instead of a stone was the founder of civilization.
Human history is in essence a history of ideas.
One of the greatest diseases is to be nobody to anybody.
The true measure of a man is how he treats someone who can do him absolutely no good.
Our true nationality is mankind.
No mortal can keep a secret. If the lips are silent, he chatters with his fingertips; betrayal oozes out of him at every pore.
You climb to reach the summit, but once there, discover that all roads lead down.
I can calculate the motion of heavenly bodies but not the madness of people.
The U.S. Census Bureau acknowledged this fact when it reported that those with a bachelor's degree earn on average $1 million more over their lifetime than those with only a high school diploma.
Sometimes our light goes out, but is blown again into instant flame by an encounter with another human being.
Every form of addiction is bad, no matter whether the narcotic be alcohol, morphine or idealism.
I just invent, then wait until man comes around to needing what I've invented.
We have to heal our wounded world. The chaos, despair, and senseless destruction we see today are a result of the alienation that people feel from each other and their environment.
A people and their religion must be judged by social standards based on social ethics. No other standard would have any meaning if religion is held to be necessary good for the well-being of the people.
One can choose to go back toward safety or forward toward growth. Growth must be chosen again and again; fear must be overcome again and again.
If you talk to a man in a language he understands, that goes to his head. If you talk to him in his language, that goes to his heart.