Latin Proverbs, Mottoes, Phrases, and Words: Group A

(classical-language maxims, slogans, adages, proverbs, and words of wisdom that can still capture our modern imagination)

Expressions of general truths: Latin to English maxims, proverbs, and mottoes

Word entries are from Latin unless otherwise indicated.

a posteriori
From effect to cause, from facts to generalizations, inductively [applied to reasoning].

A posteriori is a conclusion which is reached by examination and analysis of the specific facts, as happens in a science laboratory, where a person reasons from actual observation of data and comes to a conclusion from the observed facts. Contrasted with a priori.

a primo ad ultimum
From first to last.
a priori
1. In advance, that is, without prior investigation or experience.
2. Presumptive, without examination.
3. Literally, from the former; from what comes before, from cause to effect, deductively [applied to reasoning]; from the general to the particular; self-evident, known independently of experience.
4. Etymology: from a-, ab- + prior, "former".

In a priori reasoning, one works from a known premise (or premises) to a reasonably assumed effect. By extension the phrase is also used to mean, "to the best of one's knowledge". This type of reasoning is the foundation of Western logic, especially that which is embodied in syllogism. Someone has stated that "the great masters of a priori reasoning were Aristotle and Sherlock Holmes."

a quo
From which.

Opposite of ad quem (for which; to whom).

a spe in spem
From hope to hope.
a verbis ad verbera.
From words to blow.

Also translated as, "One thing leads to another."

ab absurdo
From the absurd.

When a person argues ab absurdo, he or she is trying to establish the validity of her or his position by pointing out the ridiculousness (absurdity) or foolishness of the opponent's arguments.

Although an argument ab absurdo "demolish" an opponent's position in debate, it does not necessarily prove the validity of that person’s position. The only thing that may be accomplished is that the ab absurdo argument may make the other person seem to be foolish or illogical.

Ab abusu ad usum non valet consequentia.
The consequences of abuse do not apply to general use.

Used by legal specialists and suggests that a right should not be withheld from people because of others who abuse it.

Ab actu ad posse valet illatio.
Inference from what has happened to what will happen is valid.
ab aeterno
Since the beginning of time.

Literally, "from eternity" or of "no date of origin".

ab agendo
1. Out of action.
2. Obsolete or retired.
Ab alio expectes, alteri quod feceris.
Expect from others what you have done to them.

Prout vultis ut faciant vobis homines, et vos facite illis similiter, "As you would that men should do to you, do you also to them in like manner." From Luke 6:31 of the Latin Vulgate, a Latin version of the Bible produced by Saint Jerome in the 4th century.

From Latin vulgata editio, "an edition made public" or "an edition for ordinary people" which is a version used by the Roman Catholic Church.

ab ante
From before or in advance.

Example: making up one’s mind ab ante.

ab antiquo
From ancient times or from olden times.

Useful for those who are always looking back to the good old days.

ab asino lanam.
Literally, "wool from an ass [donkey]".

Its more modern meaning is "Trying to get blood from a stone or a turnip" or anyone who tries to achieve the impossible is bound to fail.


Pointing to a page about a kleptomaniac Units of mottoes and proverbs listed by groups: A to X.