Doubtful prayer is no prayer at all.
It is doubtful whether God can bless a man greatly until He has hurt him deeply.
It is doubtful that anyone has contributed more in a lifetime to the overall coverage of cricket than Christopher Martin-Jenkins.
What is clear to one man may be doubtful to another.
That we need only to recognize GOD intimately present with us, to address ourselves to Him every moment, that we may beg His assistance for knowing His will in things doubtful, and for rightly performing those which we plainly see He requires of us, offering them to Him before we do them, and giving Him thanks when we have done.
The benefit of even limited monopolies is too doubtful, to be opposed to that of their general suppression.
Tis safter to be that which we destroy Than by destruction dwell in doubtful joy.
I put forward formless and unresolved notions, as do those who publish doubtful questions to debate in the schools, not to establish the truth but to seek it.
When it's hard and you are doubtful, give more.
Hardness of heart is a dreadful quality, but it is doubtful whether in the long run it works more damage than softness of head.
Many of the historical proverbs have a doubtful paternity.
It is doubtful that the government knows much more than the public does about how government [Economic] policies will work.
The first act's doubtful, but we say, it is the last commends the play.
As a person I'm a little more doubtful, introspective and analytical.
. . . he seemed to approach the grave as an hyperbolic curve approaches a line, less directly as he got nearer, till it was doubtful if he would ever reach it at all.
A man was meant to be doubtful about himself, but undoubting about the truth; this has been exactly reversed.
Consultation and compliance can conduce little to the perfection of any literary performance; for whoever is so doubtful of his own abilities as to encourage the remarks of others, will find himself every day embarrassed with new difficulties, and will harass his mind, in vain, with the hopeless labour of uniting heterogeneous ideas, digesting independent hints, and collecting into one point the several rays of borrowed light, emitted often with contrary directions.
I cannot explain it; but when difficulties arise, I am not perplexed or doubtful. I know how to meet them.
The human mind has to ask "Who, what, whence, whither, why am I?" And it is very doubtful if the human mind can answer any of these questions.
It's doubtful that anyone with an internet connection at his workplace is writing good fiction.