I think that everyone has something about themselves that they feel is their weakness... their 'disability.' And I'm certain we all have one, because I think of a disability as being anything which undermines our belief and confidence in our own abilities.
If your knowledge teaches you not to rise above human weakness and misery and lead your fellow man on the right path, you are indeed a man of little worth and will remain such till Judgment Day.
God's word is:
'He who strives never perishes.'
I have implicit faith in that promise.
Though, therefore, from my weakness
I fail a thousand times, I shall not lose faith.
If weakness may excuse, What murderer, what traitor, parricide, Incestuous, sacrilegious, but may plead it? All wickedness is weakness; that plea, therefore, With God or man will gain thee no remission.
The weak have no place here, in this life or any other life. Weakness leads to slavery. Weakness leads to all kinds of misery, physical and mental. Weakness is death.