Progress of mankind is progress of mind and intellect.
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.
A wise man can play the part of a clown, but a clown can't play the part of a wise man.
A great man is different from an eminent one in that he is ready to be the servant of the society.
Our species needs, and deserves, a citizenry with minds wide awake and a basic understanding of how the world works.
Everything that irritates us about others can lead us to an understanding of ourselves.
People demand freedom of speech as a compensation for the freedom of thought which they seldom use.
Great minds discuss ideas. Average minds discuss events. Small minds discuss people.
The world would be happier if men had the same capacity to be silent that they have to speak.
On the highest throne in the world, we still sit only on our own bottom.
I despise people who depend on these things [heroin and cocaine]. If you really want a mind-altering experience, look at a tree.
People are more difficult to work with than machines. And when you break a person, he can't be fixed.
Anyone who says he can see through women is missing a lot.
It is no measure of health to be well adjusted to a profoundly sick society.
He that wrestles with us strengthens our nerves and sharpens our skill. Our antagonist is our helper.
A man's feet should be planted in his country, but his eyes should survey the world.
All is in the hands of man. Therefore wash them often.
A man's first care should be to avoid the reproaches of his own heart.
Everywhere man blames nature and fate yet his fate is mostly but the echo of his character and passion, his mistakes and his weaknesses.
If you want to know what a man's like, take a good look at how he treats his inferiors, not his equals.