Kindness is loving people more than they deserve
Those who never retract their opinions love themselves more than they love the truth.
When a nation gives birth to a man who is able to produce a great thought, another is born who is able to understand and admire it
The aim of argument, or of discussion, should not be victory, but progress
Genius is the ability to see things invisible, to manipulate things intangible, to paint things that have no features
We may convince others by our arguments but we can only persuade them by their own
Space is to place as eternity is to time