Even though the world as a whole progresses, youth must always start again from the beginning, and as individuals go through the epochs of the world's culture.

Help me to discover Thy truth, O Lord, and preserve me from those who have already found it

Those who have no hope for a future life are already dead for the present one.

Man knows himself only insofar as he knows the world, becoming aware of it if only within himself, and of himself self only within it. Each new subject, well observed, opens up within us a new organ of thought.

How 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.

Nature does not suffer her veil to be taken from her, and what she does not choose to reveal to the spirit, thou wilt not wrest from her by levers and screws.

Faust: Who holds the devil, let him hold him well, He hardly will be caught a second time.