Progress of mankind is progress of mind and intellect.
Human history is in essence a history of ideas.
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.
I can calculate the motion of heavenly bodies but not the madness of people.
He that wrestles with us strengthens our nerves and sharpens our skill. Our antagonist is our helper.
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.
People seldom do what they believe in. They do what is convenient, then repent.
The true measure of a man is how he treats someone who can do him absolutely no good.
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.
Challenging the meaning of life is the truest expression of the state of being human.
A man's feet should be planted in his country, but his eyes should survey the world.
How important it is for us to recognize and celebrate our heroes and she-roes!
There is no marvel in a woman learning to speak, but there would be in teaching her to hold her tongue.
A question that sometimes drives me hazy: Am I, or the others, crazy?
A woman's chastity consists, like an onion, of a series of coats.
Human nature is not totally fixed, but on any realistic scale, evolutionary processes are much too slow to affect it.
I like university professors, but you know, we shouldn't hold them up as the high-water mark of all human achievement. They're just a form of life, another form of life.
I despise people who depend on these things [heroin and cocaine]. If you really want a mind-altering experience, look at a tree.
Great minds discuss ideas. Average minds discuss events. Small minds discuss people.
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.
The whole universe is contained within a single human being – you.