Hope is a good breakfast, but it is a bad supper. - Francis Bacon

"Philosophy when superficially studied, excites doubt, when thoroughly explored, it dispels it."

"Imagination was given to man to compensate him for what he is not; a sense of humor to console him for what he is."

"Read not to contradict and confute, nor to believe and take for granted ...but to weigh and consider."

"It is impossible to love and to be wise."

"For the things of this world cannot be made known without a knowledge of mathematics."