A narrow mind and a fat head invariably come on the same person.
Treat people as if they were what they ought to be, and you help them to become what they are capable of being.
I despise people who depend on these things [heroin and cocaine]. If you really want a mind-altering experience, look at a tree.
That man is the noblest creature may also be inferred from the fact that no other creature has yet contested this claim.
You may turn into an archangel, a fool, or a criminal ? no one will see it. But when a button is missing?everyone sees that.
Everywhere man blames nature and fate yet his fate is mostly but the echo of his character and passion, his mistakes and his weaknesses.
Ninety-nine percent of who you are is invisible and untouchable.
Sickness is mankind's greatest defect.
We are just an advanced breed of monkeys on a minor planet of a very average star. But we can understand the Universe. That makes us something very special.
Our true nationality is mankind.
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.
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.
Every form of addiction is bad, no matter whether the narcotic be alcohol, morphine or idealism.
It is no measure of health to be well adjusted to a profoundly sick society.
Every man takes the limits of his own field of vision for the limits of the world.
Are we happy that our grandchildren may never seen an elephant except in a picture book?
Sometimes our light goes out, but is blown again into instant flame by an encounter with another human being.
The first human who hurled an insult instead of a stone was the founder of civilization.
I just invent, then wait until man comes around to needing what I've invented.
The highest forms of understanding we can achieve are laughter and human compassion.