, you will understand from this

O

Observe again

Occasionally you ought to read

Of course I am aware

Of course I am putting an impossible case

Of course I can not be taken to mean

Of course I do not maintain

Of course I do not stop here

Of course I would not allow

Of course much may be said

Of course these remarks hold good

Of course we may, if we please

Of course you will sympathize

Of one thing, however, I am certain

Of this briefly

Of this statement I will only say

Of this truth I shall convince you by

On a review of the whole subject

On occasions of this kind

On such a day as this

On the contrary, I am assuming

On the occasion to which I refer

On the other hand, it is clear

On the whole, then, I observe

On this auspicious occasion

On this point I do not mean to dwell

On this subject you need not suspect

Once again, there are those

Once more I emphasize

Once more let me try to put into words

One additional remark

One almost wishes

One can not decline to note

One concluding remark has to be made

One fact is clear and indisputable

One further word

One important topic remains

One is fairly tempted to wish

One lesson history may be said to repeat

One might be challenged to produce

One of the ancients said

One of the most commonly known

One of the most extraordinary incidents

One of the things I recollect with most pride

One of these signs is the fact

One or two points are made clear

One other circumstance

One other remark suggests itself

One remark I will make

One thing more will complete this question

One thing which always impressed me

One very striking tendency

One word in courtesy I must say

One word more in a serious vein

One would naturally suppose

Only so much do I know

Opinions are divided as to whether

Or to come nearer home

Or to take but one other example

Ordinarily speaking, such deductions

Others may hold other opinions

Ought we not to think

Our thoughts wander back

Over and above all this

P

Pardon me if

Perhaps another reason why

Perhaps, however, in speaking to you

Perhaps, however, some among you will be

Perhaps I may be best able to illustrate

Perhaps I ought to say

Perhaps it may be doubted

Perhaps, sir, I am mistaken in

Permit me frankly to say

Permit me to add another circumstance

Permit me to bring home to you