Rightness of principle or practice; exact conformity to truth, or to the rules prescribed for moral conduct, either by divine or human laws; uprightness of mind; uprightness; integrity; honesty; justice.
Then, in the next place, we must know that every being which is endowed with reason, and transgresses its statutes and limitations, is undoubtedly involved in sin by swerving from rectitude and justice. Origen
Justice is a certain rectitude of mind whereby a man does what he ought to do in the circumstances confronting him. Thomas Aquinas
Liberalism is a religion. Its tenets cannot be proved, its capacity for waste and destruction demonstrated. But it affords a feeling of spiritual rectitude at little or no cost. David Mamet
Neither liberal nor conservative politicians can resist the temptation to stand as mighty sequoias of rectitude amid the lowly underbrush of fundraising. P. J. O'Rourke
The sense of historical continuity, and a feeling for philosophical rectitude cannot, however, be compromised. Herbert Read