He who shouts the loudest has the floor.

He who walks in another's tracks leaves no footprints.

Hindsight is an exact science.

History is the science of what never happens twice.

History repeats itself. That is one of the things wrong with history.

I disapprove of every conspiracy of which I am not a part.

I have never found, in long experience, that criticism is ever inhibited by ignorance.

I have run out of sick leave, so I'm calling in dead.

I have seen the truth and it makes no sense.

I have yet to see any problem, however complicated, which when you looked at it in the right way, did not become still more complicated.