Only he is free who cultivates his own thoughts and strives without fear to do justice to them.
Our second mother, habit, is also a good mother.
He who, to be happy, needs nothing but himself, is happy.
Being alone when one's belief is firm, is not to be alone.
It is only when one is thoroughly true that there can be purity and freedom. Falsehood always punishes itself.
Discontent is the source of all trouble,but also of all progress, in individuals and nations.