Do not let the enemy see your spirit.

To avoid any malicious instrumentalization that would disguise my patriotism, my values, and my deep convictions.

You must achieve the spirit of not allowing the enemy to attack a second time.

One should attend to one's enemies, for they are the first persons to detect one's errors.

... one reads, above all, to prevent oneself thinking.

Whatever be Russia's designs upon India, whether they be serious and inimical or imaginary and fantastic, I hold that the first duty of English statesmen is to render any hostile intentions futile, to see that our own position is secure, and our frontier impregnable, and so to guard what is without doubt the noblest trophy of British genius, and the most splendid appanage of the Imperial Crown.

Secrecy is the first essential in affairs of state.

Supreme importance in war is to attack the enemy’s strategy.

We must smother the internal and external enemies of the Republic or perish with it; now in this situation, the first maxim of your policy ought to be to lead the people by reason and the people's enemies by terror.

The whole secret lies in confusing the enemy, so that he cannot fathom our real intent.

We must not look too dangerous to the enemy. This does not mean that we cannot do anything that threatens him. After all, our mere possession of a Type I Deterrence capability implies that we can harm him if we desire. But it does mean, to the extent that is consistent with our other objectives, we should not make him more insecure than is necessary. We do not want to make him so unhappy and distraught that he will be tempted to end his anxieties by the use of drastic alternatives. We do not wish him to conclude, "better a fearful end than endless fear." We must not appear to be excessively aggressive, irresponsible, trigger-happy, or accident prone, today or in the future.

The top priority of the terrorist — even more important than killing you — is to make himself your top priority. This is why protecting ourselves from terrorist violence is not enough to defeat terrorism, especially if we try to achieve safety in ways that elevate the importance of terrorists and wind up publicizing their causes.

On finding the enemy has notice of your designs, you must immediately alter your plan of operations. Consult with many on proper measures to be taken, but communicate the plans you intend to put in execution to few, and those only of the most assured fidelity; or rather trust no one but yourself. (General Maxims)

The important thing in strategy is to suppress the enemy's useful actions but allow his useless actions. However, doing this alone is defensive. First, you must act according to the Way, suppressing the enemy's techniques, foiling his plans and thence command him