When intelligent and sensible people despise knowledge in their old age, it is only because they have asked too much of it and of themselves.
Johann Wolfgang von GoetheThere is no permanence in doubt; it incites the mind to closer inquiry and experiment, from which, if rightly managed, certainty proceeds, and in this alone can man find thorough satisfaction.
Johann Wolfgang von GoetheHow can we learn self-knowledge? Never by taking thought but rather by action. Try to do your duty and you'll soon discover what you're like.
Johann Wolfgang von Goethe