Perhaps to the uninformed it may appear unaccountable that a man should be able to retain in his memory such a variety of learning but the close alliance with each other of the different branches of science will explain the difficulty.

The hypothesis of surviving intelligence and personality - not only surviving but anxious and able with difficulty to communicate - is the simplest and most straightforward and the only one that fits all the facts.

The difficulty of IVF or of any fertility issues is the hope and the shattered hope the dream that it might happen this time and then it doesn't happen.

There is a widespread difficulty in the Muslim world which has to do with how the people are taught about examining their own history. A whole range of stuff has been placed off limits.

Difficulty is the excuse history never accepts.

The greater the difficulty the more the glory in surmounting it.

The dogmas of the quiet past are inadequate to the stormy present. The occasion is piled high with difficulty and we must rise with the occasion. As our case is new so we must think anew and act anew.

The very greatest things - great thoughts discoveries inventions - have usually been nurtured in hardship often pondered over in sorrow and at length established with difficulty.

The difficulty is not so great to die for a friend as to find a friend worth dying for.

The honest truth is that if this government were to propose the massacre of the first-born it would still have no difficulty in getting it through the Commons.