Forewarn'd, forearm'd.
To be proud of knowledge is to be blind with light.
He that hath a trade hath an estate; and he that hath a calling hath a place of profit and honor. A ploughman on his legs is higher than a gentleman on his knees.
Beware of the young doctor and the old barber.
Lost time is never found again, and what we call time enough, always proves little enough.
What science can there be more noble, more excellent, more useful for men, more admirably high and demonstrative, than this of mathematics?