The man who writes about himself and his own time is the only man who writes about all people and about all time.

[Man] progresses in all things by making a fool of himself.

The real pleasure of one's life is the devotion to a great objective of one's consideration.

There is nothing that can be changed more completely than human nature when the job is taken in hand early enough.

We should all be obliged to appear before a board every five years and justify our existence... on pain of liquidation.

A learned man is an idler who kills time by study.

I have studied him - the wonderful man - and in my opinion far from being an anti-Christ he must be called the saviour of humanity.