To the valiant actions speak alone.
There is not room to swing a cat.
Nature and wisdom are not, but should be, companions.
A mere index hunter, who held the eel of science by the tail. Index-hunter is a term used mockingly, meaning one who acquires superficial knowledge merely by consulting indexes. The '[holding] the eel of science by the tail' allusion was used in 1728 by Alexander Pope (q.v.).
Ridiculous modes, invented by ignorance, and adopted by folly.
Some folks are wise and some are otherwise.