It is not the being seen of men that is wrong, but doing these things for the purpose of being seen of men. The problem with the hypocrite is his motivation. He does not want to be holy; he only wants to seem to be holy. He is more concerned with his reputation for righteousness than about actually becoming righteous. The approbation of men matters more to him than the approval of God.
Often a non-Christian knows something about the earth, the heavens, and the other parts of the world, about the motions and orbits of the stars and even their sizes and distances... and this knowledge he holds with certainty from reason and experience. It is thus offensive and disgraceful for an unbeliever to hear a Christian talk nonsense about such things, claiming that what he is saying is based in Scripture. We should do all that we can to avoid such an embarrassing situation, which people see as ignorance in the Christian and laugh to scorn.
Once for all, then, a short precept is given thee: Love, and do what thou wilt: whether thou hold thy peace, through love hold thy peace; whether thou cry out, through love cry out; whether thou correct, through love correct; whether thou spare, through love do thou spare: let the root of love be within, of this root can nothing spring but what is good.
For I wondered that others, subject to death, did live, since he whom I loved, as if he should never die, was dead; and I wondered yet more that myself, who was to him a second self, could live, he being dead. Well said one of his friend, "Thou half of my soul"; for I felt that my soul and his soul were "one soul in two bodies": and therefore was my life a horror to me, because I would not live halved. And therefore perchance I feared to die, lest he whom I had much loved should die wholly.
Man has been naturally so created that it is advantageous for him to be submissive, but disastrous for him to follow his own will, and not the will of his creator.
It is salutary for us to learn to hold cheap such things, be they good or evil, as attach indifferently to good men and bad, and to covet those good things which belong only to good men, and flee those evils which belong only to evil men.
When I come to be united to thee with all my being, then there will be no more pain and toil for me, and my life shall be a real life, being wholly filled by thee.
Late have I loved you, O beauty ever ancient, ever new. Late have I loved you. You have called to me, and have called out, and have shattered my deafness. You have blazed forth with light and have put my blindness to flight! You have sent forth fragrance, and I have drawn in my breath, and I pant after you. I have tasted you, and I hunger and thirst after you. You have touched me, and I have burned for your peace.