Georges Clemenceau: Year

“My son is 22 years old. If he had not become a Communist at 22, I would have disowned him. If he is still a Communist at 30, I will do it then.”

Georges Clemenceau

On being told his son had joined the Communist Party, as quoted in Try and Stop Me (1944) by Bennet Cerf
A statement similar in theme has also been attributed to Clemenceau:
A young man who isn't a socialist hasn't got a heart; an old man who is a socialist hasn't got a head.
As quoted in "Nice Guys Finish Seventh" : False Phrases, Spurious Sayings, and Familiar Misquotations (1992) by Ralph Keyes.
W. Gurney Benham in A Book of Quotations (1948) cites a statement by François Guizot as the earliest known expression of this general idea, stating that Clemenceau merely adapted the saying substituting socialiste for republicain:
N'être pas républicain à vingt ans est preuve d'un manque de cœur ; l'être après trente ans est preuve d'un manque de tête.
Not to be a republican at twenty is proof of want of heart; to be one at thirty is proof of want of head.
Variations on this general idea have also been attributed or misattributed to many others, most commonly Winston Churchill, who is not known to have actually made any similar statement.
Post-Prime Ministerial

“His poor marksmanship must be taken into account. We have just won the most terrible war in history, yet here is a Frenchman who misses his target 6 out of 7 times at point-blank range. Of course, this fellow must be punished for the careless use of a dangerous weapon and for poor marksmanship. I suggest that he be locked up for eight years, with intensive training in a shooting gallery.”

Georges Clemenceau

Arguing against seeking the death penalty for the anarchist who had attempted to assassinate him on 19 February 1919, shooting at him seven times and hitting him only once in the chest, as quoted in A Time for Angels : The Tragicomic History of the League of Nations (1975) by Elmer Bendine, p. 106
Prime Minister

War , History , Time , Training

“We need a barrier behind which, in the years to come, our people can work in security to rebuild its ruins. That barrier is the Rhine. I must take national feelings into account. That does not mean that I am afraid of losing office. I am quite indifferent on that point. But I will not, by giving up the occupation, do something which will break the willpower of our people.”

Georges Clemenceau

Speech at the Paris Peace Conference (June 1919), quoted in David Robin Watson, Georges Clemenceau: A Political Biography (London: Eyre Methuen, 1974), p. 352.
Prime Minister

People , Feeling , Indifference

“In fifteen years I will be dead, but if you do me the honour of visiting my tomb, you will be able to say that the Germans have not fulfilled all the clauses of the treaty, and that we are still on the Rhine.”

Georges Clemenceau

Remarks to Poincaré in Cabinet (25 April 1919), quoted in David Robin Watson, Georges Clemenceau: A Political Biography (London: Eyre Methuen, 1974), p. 352.
Prime Minister

Dead

“For you a hundred years is a very long time; for us it does not amount to much. I knew men who had seen Napoleon with their own eyes. We have our conception of history and it cannot be the same as yours.”

Georges Clemenceau

Remarks to Woodrow Wilson (28 March 1919), quoted in Anthony Adamthwaite, Grandeur and Misery: France's Bid for Power in Europe 1914-1940 (London: Arnold, 1995), p. 49.
Prime Minister

Men , History , Time