He who is fixed to a star does not change his mind.
I have been impressed with the urgency of doing.
Men of lofty genius when they are doing the least work are most active.
Experience is a truer guide than the words of others.
The variety of colour in objects cannot be discerned at a great distance, excepting in those parts which are directly lighted up by the solar rays.
Study without desire spoils the memory, and it retains nothing that it takes in.