Now, _partial truth_, as has been affirmed already, _is not, in its proportion, less true than the full orb of truth_.[A] And many are the times and many are the circumstances in this strangely chequered human life of ours, with its endless movements and its perpetual vicissitudes, when apparently conflicting and antagonistic duties can be in justice, equity, and honour reconciled on one condition only, namely, that man shall leave to Omniscience alone, “from Whom no secrets are hid,” a knowledge of the full orb of certain degrees of some particular kind of truth, governing some particular subject-matter under consideration.[165][B] [Footnote A: _It is never morally lawful to tell a lie_, that is, to speak contrary to one’s mind, or to deceive by word contrary to that law of justice which bids a man render to all rational creatures their due. _To act a lie_ is as base and wicked as to tell a lie, and often more unmanly and contemptible besides: else might the deaf and dumb be unjustly deceived with impunity.] [Footnote B: The noble science of casuistry is founded on the fact that _partial truth is not less true, in its measure and in its degree, than the full orb of truth_. A knowledge of casuistry, that is, of the principles of moral science scientifically applied to the living facts of the living present, will be of primal necessity to British statesmen in the twentieth century, which will be a century of few, but strong, principles, and of few, but strong, men to apply those principles. Efficiency, and efficiency through scientific exactitude, will be the characteristic aim of all the great Imperial Powers of the world in the near future. Here, in England, with all our intellectual, moral, and physical virtues (which indeed are neither few nor contemptible), we have been too apt to allow a number of persons to speak for us, able in their way, no doubt, but of limited mental vision, and hopelessly incapable of grappling with the problems that confront a world-wide Empire, embracing a fifth (some say a fourth) of the human race. A democratic Empire must choose leaders that are _wise_, just, self-controlled, courageous; and then that Empire must entrust freely and fearlessly their destinies with such leaders, who must not be afraid faithfully to go “full tilt” against ignorant prejudice or short-sighted prepossession. Now, wisdom (or prudence) is the cardinal virtue which presides over all the other three virtues. And wisdom (or prudence) tells us that strategy in war, that sometimes necessary evil; diplomacy betwixt the representatives of nations; and above and beyond all the imparting to the general body of the people only so much knowledge of the tendencies of current events as is for the common good, can have intellectual and moral justification on this one fundamental ethical principle only, namely, that _partial truth is not less true, in its measure and in its degree, than the full orb of truth_.