Love shows itself more in adversity than in prosperity; as light does, which shines most where the place is darkest.
All our knowledge originates in opinion.
If you do not rest on the good foundation of nature, you will labour with little honor and less profit.
You will never have a greater or lesser dominion than that over yourself.
Whoever in debate quotes authority uses not intellect, but memory.
Many will think they may reasonably blame me by alleging that my proofs are opposed to the authority of certain men held in the highest reverence by their inexperienced judgments; not considering that my works are the issue of pure and simple experience.