Man has the power to act as his own destroyer - and that is the way he has acted through most of his history.
On the highest throne in the world, we still sit only on our own bottom.
One of the greatest diseases is to be nobody to anybody.
Our true nationality is mankind.
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.
I despise people who depend on these things [heroin and cocaine]. If you really want a mind-altering experience, look at a tree.
It is a waste of energy to be angry with a man who behaves badly, just as it is to be angry with a car that won't go.
In many people it is already an impertinence to say 'I'.
The world would be happier if men had the same capacity to be silent that they have to speak.
A man sooner or later discovers that he is the master-gardener of his soul, the director of his life.
The people who turn out best are those people who make the best out of the way things turn out.
There is no marvel in a woman learning to speak, but there would be in teaching her to hold her tongue.
To live alone is the fate of all great souls.
A great man is different from an eminent one in that he is ready to be the servant of the society.
That man is the noblest creature may also be inferred from the fact that no other creature has yet contested this claim.
Outstanding people have one thing in common: an absolute sense of mission
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.
All of humanity's problems stem from man's inability to sit quietly in a room alone.
The great gift of human beings is that we have the power of empathy, we can all sense a mysterious connection to each other.
All is in the hands of man. Therefore wash them often.
Human history becomes more and more a race between education and catastrophe.