F
Far from it
Few indeed there are
Few subjects are more fruitful
Few things impress the imagination more
Finally, it is my most fervent prayer
First in my thoughts are
First of all I ask
For, be assured of this
For behold
For I must tell you
For if any one thinks that there is
For, in truth, if you please to recollect
For instance, I can fancy
For is it not true
For it is not right to
For let it be observed first
For mark you
For my own part, I believe
For myself, certainly I think
For observe what the real fact is
For one I deny
For, perhaps, after all
For, perhaps, some one may say
For so it generally happens
For the sake of my argument
For this is what I say
For this reason, indeed, it is
For we all know
Fortunately for us
Fortunately I am not obliged
From one point of view we are
From the circumstances already explained
From the standpoint of
From this statement you will perceive