“It is best not to go on for great quest for truth , it will only make you miserable”

“If you would be a real seeker after truth, it is necessary that at least once in your life you doubt, as far as possible, all things.”

“There is nothing more ancient than the truth.”

“To live without philosophizing is in truth the same as keeping the eyes closed without attempting to open them.”

“Common sense is the best distributed commodity in the world, for every man is convinced that he is well supplied with it.”

“In order to seek truth, it is necessary once in the course of our life to doubt, as far as possible, of all things.”

“And thus, the actions of life often not allowing any delay, it is a truth very certain that, when it is not in our power to determine the most true opinions we ought to follow the most probable.”