Our Lord Jesus Christ is the Truth:
Jesus saith to him: I am the Way, and the Truth, and the Life. No man cometh to the Father, but by Me.
Truth is the mind’s conformity to reality.
Therefore, when a man (or society) rejects Christ and His teaching Church, he is rejecting reality.
But man is a creature of habit. He is often inconsistent and takes a while to come to see the full consequences of positions he has already accepted (or already rejected). In other words, when a man rejects reality concerning one truth, he might continue to hold other truths which are inconsistent with his new opinion and it might take him a while to reject the reality of those further, related truths.
Thus, for example, when man rejects the Catholic Church’s authority, he might continue to believe in the Bible’s authority, although the Bible’s authority comes from the Catholic Church.
Similarly, Protestants who rejected the authority of the Catholic Church, did not immediately reject a man’s authority over his wife. For a time, those Protestants only took rebellion from authority “so far”, and only gradually did their rebellion spread further, to other authority given by God and willed by Him.
But when a man rejects part of reality, he embarks on a reckless path leading to rejection of other parts of reality. That is, rejecting a part of reality inevitably leads to rejecting more of reality – the only uncertainty is how long it will take to reject additional, particular parts of reality.
Thus, the Protestants reject the reality of the Catholic Church’s authority and this leads them down the road to feminism (which is rejecting the reality of a husband’s authority) and also to rejecting the different and unique roles of the sexes.
Perhaps the Protestants who had first denied the authority of the Catholic Church, had thought it absurd to deny that man is the head of (and authority over) his wife. This is because, while denying the Church’s authority, the difference between the roles of the sexes is a natural and supernatural truth which remained obvious for a time, even to Protestants.
But when man begins denying reality, the denials continue and become more unhinged from reality. Man becomes more blinded to what had previously been obvious to him. Man progressively denies even those things which are according to Nature and to common sense. For example, man comes to accept that a male can become a female simply by deciding he is a female.
Without God’s help, man does not stop and he cannot stop descending down this destructive road. Man accepts more and more false ideas he would have previously thought were absurd and impossible to accept. Just like early apostates from Catholicism would have thought feminism to be absurd, likewise people would have thought it absurd, a few decades ago, that a male would become a female simply by deciding that he is one.
This delusion is not merely a few deranged individuals fooling themselves with this crazy fantasy – like believing they are Napoléon. Society now accepts this absurdity in public and now viciously attacks those who publicly deny such an obvious delusion.
Similarly, society now accepts that a person can be neither male nor female if he simply decides he is neither. Society calls this person “non-binary”. This delusion is a direct attack on Nature and on Sacred Scripture, because:
God created man to his own image: to the image of God he created him: male and female he created them.
People accept these delusions because the rejection of Christ does not end by simply rejecting Him. He is the Truth and the Author of Truth. By rejecting Him, man is led to progressively reject more and more aspects of reality. Nor does he stop with these gender delusions.
Until man goes back to God and to His Catholic Church – which will happen only through the consecration of Russia to Our Lady’s Immaculate Heart – the steady descent of (blind) society will continue.
There are many additional delusions – even more extreme and more irrational – which are ahead for blind and unrepentant mankind. What are those future delusions? Perhaps one of them is society publicly accepting the absurdity that people are cats, dogs, hippopotamuses and dragons when people decide that they are. Society has not yet publicly accepted these delusions but they already exist on society’s fringes – like the gender delusions existed only on the fringes until a few decades ago.
Perhaps also, society will publicly accept the delusions of people claiming that they are whatever age they choose for themselves.
We might think society could never be so blind as to accept these delusions. However, who could ever have predicted a few decades ago, that society would publicly accept and tyrannically insist (as it does now) that you are whatever sex you say you are, and that you can “change” your gender whenever you choose to do so, by changing your mind.
We can glimpse the future in a survey by the Family Policy Institute in Washington which showed that many college students are ready to accept that a person is whatever gender, race or age he claims to be, no matter how absurd the claim is.
This acceptance of delusion in place of reality, is part of God’s punishment for apostate man rejecting Our Lord Jesus Christ, Who is the Truth.
When men choose not to believe in God, they do not thereafter believe in nothing; they then become capable of believing in anything!
The truth is priceless! Compromising the truth leads to blindness, delusion, and destruction!
No “advantage” – including being at peace with those around us – is worth the infinite “cost” of compromising.
Pray for the consecration of Russia to Our Lady’s Immaculate Heart!
Let us thank God every day for the Traditional Catholic Faith and pray hard to keep it in all its purity!
Let us profess the Faith, whole and inviolate, until our dying breath!
 St. John’s Gospel, 14:6 emphasis added.
I answer that, As stated before, truth resides, in its primary aspect, in the intellect. Now since everything is true according as it has the form proper to its nature, the intellect, in so far as it is knowing, must be true, so far as it has the likeness of the thing known, this being its form, as knowing. For this reason, truth is defined by the conformity of intellect and thing; and hence to know this conformity is to know truth.
Summa, Ia, Q.16, a.2, respondeo, emphasis added.
 See, e.g., this news report: 6-foot, 5-inch male wins girls’ running event, named ‘Woman of the Week’, reported here:
 See, e.g., these news reports:
❖ Construction workers arrested, fined, fired for laughing at men dressed as women, reported here:
❖ Protest at public library shows LGBT movement won’t stop until it dominates everything, reported here:
Whatever doubts people have about such delusions are whispered behind closed doors because the public levers of society are against them. Such doubts always occur when swallowing the devil’s delusions because man has an intellect and retains a nagging doubt whenever he accepts “black as white”, i.e., any lie of the devil. This gender delusion is like many other lies accepted by society, such as the acceptance of divorce even though people understand that it breaks the couple’s vows on their wedding day that they will be faithful to each other until death.
The longer society accepts a particular lie – whether concerning divorce, changing genders or anything else, the more people will be accustomed to taking the lie for granted.
 Marriam-Webster Dictionary has designated the word “they” as its word of the year for 2019, in part because this word is “established in the English language” as a word now “used to refer to one person whose gender identity is nonbinary” (i.e., neither male nor female).
 Genesis, 1:27 (emphasis added).
 Woman claims to be a cat:
 Man claims to be a dog:
 Man claims to be a female hippopotamus:
 Man claims to be a dragon:
 Sixty-nine-year-old man in court battle to get his birth certificate changed to reflect the age he “feels” himself to be.
Adult man claims to be a six-year-old girl.
Interestingly, the only idea these students had much difficulty accepting was the suggestion that the 5’9” tall interviewer was really 6’5” tall, as he told them he was. Id.
 Emphasis added. This quote is commonly attributed to G.K. Chesterton although we don’t know specifically where it is found in his writings.