Who sows virtue ought to reap honour.
Men of lofty genius when they are doing the least work are most active.
Poor is the pupil who does not surpass his master.
Test knowledge through experience, be prepared to make mistakes, and be persistent about it.
But to me all sciences seem vain and full of error that are not born of experience, mother of all certainty, and do not terminate in an actual experience.
O speculators about perpetual motion, how many vain chimeras have you created in the like quest? Go and take your place with the seekers after gold.