A safe rule.
It will be safer for the student to follow the general rule, as illustrated in the following sentences:—
If so, they are yet holier than we.—Ruskin.
Who would suppose it is the game of such as he?—Dickens.
Do we see
The robber and the murd'rer weak as we?
—Milton.
I have no other saint than thou to pray to.—Longfellow.
"Than whom."
401. One exception is to be noted. The expression than whom seems to be used universally instead of "than who." There is no special reason for this, but such is the fact; for example,—
One I remember especially,—one than whom I never met a bandit more gallant.—Thackeray.
The camp of Richard of England, than whom none knows better how to do honor to a noble foe.—Scott.