What makes our opponents useful is that they allow us to believe that without them we would be able to realize our goals.
There are things that don't deserve to be said briefly.
The nobility of a human being is strictly independent of that of his convictions.
Being right is less important to us than the freedom to be wrong.
There are big and little truths, but all belong to the same race.
What scientist would not long to go on living, if only to see how the little truths he has brought to light will grow up?