Enthusiasm gives life to what is invisible; and interest to what has no immediate action on our comfort in this world.

I must keep on rowing, not until I reach port but until I reach my grave.

... in the history of the human mind there has never been a useful thought or a profound truth that has not found its century and admirers.

inventiveness is childish, practice sublime.

Enthusiasm gives life to what is invisible; and interest to what has no immediate action on our comfort in this world.

There is no reality on this earth except religion and the power of love; all the rest is even more fugitive than life itself.

The greatest happiness is to transform one's feelings into action.