“When Demosthenes was asked what was the first part of oratory, he answered, "Action;" and which was the second, he replied, "Action;" and which was the third, he still answered, "Action."”

Conversation with Jean Martet (1 January 1928), Ch. 12
Clemenceau, The Events of His Life (1930)

Source: Life, the Truth, and Being Free (2010), p. 110

Source: Space Chantey (1968), Ch. 6
Context: Something was working in Roadstrum's little ape head. When he had been a man he had always known when it was time for action; particularly he had always known the last moment when action was still possible. He knew now that that moment was come very near. … Then a blinding light burst upon Roadstrum, and he saw the truth of the situation. Many things Roadstrum was not, and it was sometimes wondered why he was the natural leader of all the men. He was their leader because he was a man on whom the blinding light sometimes descended.

Diogenes, 6.
The Lives and Opinions of Eminent Philosophers (c. 200 A.D.), Book 6: The Cynics

The Ethics of Belief (1877), The Duty of Inquiry
Context: No man holding a strong belief on one side of a question, or even wishing to hold a belief on one side, can investigate it with such fairness and completeness as if he were really in doubt and unbiased; so that the existence of a belief not founded on fair inquiry unfits a man for the performance of this necessary duty.
Nor is it that truly a belief at all which has not some influence upon the actions of him who holds it. He who truly believes that which prompts him to an action has looked upon the action to lust after it, he has committed it already in his heart. If a belief is not realized immediately in open deeds, it is stored up for the guidance of the future. It goes to make a part of that aggregate of beliefs which is the link between sensation and action at every moment of all our lives, and which is so organized and compacted together that no part of it can be isolated from the rest, but every new addition modifies the structure of the whole. No real belief, however trifling and fragmentary it may seem, is ever truly insignificant; it prepares us to receive more of its like, confirms those which resembled it before, and weakens others; and so gradually it lays a stealthy train in our inmost thoughts, which may someday explode into overt action, and leave its stamp upon our character for ever.

Source: The Unicorn Girl (1969), Chapter 2 (p. 22)
Kurland is actually quoting here from Ian Fleming’s novel Goldfinger

Platonic Questions, viii, 4
Bartlett's Familiar Quotations, 10th ed. (1919)

Celui qui se trompe dans une intention qu’il croit bonne, on peut le combattre, on ne cesse pas de l’estimer.
Part III, ch. XVI
The Mysterious Island (1874)

In Search of the Miraculous (1949)
Context: RELIGION IS DOING; a man does not merely think his religion or feel it, he lives his religion as much as he is able, otherwise it is not religion but fantasy or philosophy. Whether he likes it or not he shows his attitude towards religion by his actions and he can show his attitude only by his actions. Therefore if his actions are opposed to those which are demanded by a given religion he cannot assert that he belongs to that religion.