Translating "mankind evolves" and two other two-word phrases

Question

Are you willing to take a look at my efforts at translating 6 words from English to Latin?

Here goes:

Mankind evolves: Homines evolvant

God disappoints: Deus frustrat

Reason refutes: Ratio refellat

Thoughts? How did I do? I'm open to corrections.

Answer 1

For the first one, you could also go with mundus for "mankind", since homines generally refers to a large group of people as opposed to an entity.
EDIT: Evolvant comes from evolvo, which is a third conjugation verb. Thus, evolvant is in the subjunctive mood as opposed to the indicative, evolvunt, which you should be using here.
Evolvo means "roll out" or "unfold", so I think adveniunt ("arrive at" or "reach"), or augescunt ("grow" or prosper" may better suit your translation. It all depends on the specific type of "evolution" you are talking about (ex: intellectual, physical, etc). Also note that if you choose to go with mundus, you need a singular ending (-t) on the verb.

The second one looks good!

In the third phrase, alternate translations for "reason" are mens and argumentum, but ratio is perfectly acceptable too.
EDIT: Again, mind the conjugation. Refellat is the 3rd person active subjunctive of the word refello, so you should use refellit instead.

EDIT: Just a general note about verb conjugations:
Conjugations are determined by looking at the 2nd principal part of the verb.

1st conjugation verbs end with -āre.

amō, amāre, amāvī, amātum = love, like
dō, dāre, dedī, datum = give

2nd conjugation verbs end with -ēre.

videō, vidēre, vidī, visum = see, look at
doceō, docēre, docuī, doctum = to teach

3rd conjugation verbs end with -ere.

dicō, dicere, dixī, dictum = say, speak
cadō, cadere, cecidī, casum = fall

4th conjugation verbs end with -īre.

dormiō, dormīre, dormīvī, dormītum = sleep, rest
veniō, venīre, venī, ventum = come

The present stem of a verb is found by dropping the -re from the 2nd principal part for 1st and 2nd conjugation verbs, and by dropping the -ō from the 1st principal part for 3rd and 4th conjugation verbs. Once you obtain the stem, you can then add on the appropriate endings.

Hope this was helpful!

Answer 2

The verb evolvere means to "roll out", "develop" or "evolve". If you write homines evolvunt, I interpret it as "people develop [something]". If mankind is the thing being developed rather than the one guiding the development, I would use passive. To me, at least, homines evolvuntur means "people are developed" or "people evolve". The verb evolvere is third conjugation, so I would read homines evolvant (which is conjunctive instead of indicative) as "may people develop [something]".

Homines means "people", not really "mankind". Genus humanum would be more appropriate for "mankind" or "human race". Note that it is singular, whereas homines is plural. Thus I suggest: Genus humanum evolvitur.

The second phrase is trickier. I am not sure how to use the verbs frustrare and frustrari. Instead, I suggest fallere, which is more severe than to "disappoint". It also has this meaning, but it takes a step in the direction of deception, cheating, and dishonesty. If this tone is acceptable, I suggest: Deus fallit.

In the third phrase ratio sounds like a suitable word. Refellere and refutare are good verbs. These are of the third and first conjugation, respectively. Your refellat is conjunctive, and I assume that would give the wrong tone. Using these, I suggest: Ratio refutat. Or: Ratio refellit.