Man's maturity: to have regained the seriousness that he had as a child at play.
Necessity is not an established fact, but rather an interpretation.
A man who is very busy seldom changes his opinions.
The best†weapon†against an enemy is another enemy
That which needs to be proved cannot be worth much.
To forget one's purpose is the commonest form of stupidity.
Like tourists huffing and puffing to reach the peak we forget the view on the way up.
Discontent is the seed of ethics.
If a man have a strong faith he can indulge in the luxury of skepticism.
He who climbs upon the highest mountains laughs at all tragedies, real or imaginary.
To take upon oneself not punishment, but guilt - that alone would be godlike.
All in all, punishment hardens and renders people more insensible; it concentrates; it increases the feeling of estrangement; it strengthens the power of resistance.
It is not a lack of love, but a lack of friendship that makes unhappy marriages.
We do not place especial value on the possession of a virtue until we notice its total absence in our opponent.
If you wish to understand a philosopher, do not ask what he says, but find out what he wants