be true

See: adhere
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References in classic literature ?
iv) Statements opposed as affirmation and negation belong manifestly to a class which is distinct, for in this case, and in this case only, it is necessary for the one opposite to be true and the other false.
Neither in the case of contraries, nor in the case of correlatives, nor in the case of 'positives' and 'privatives', is it necessary for one to be true and the other false.
Socrates is ill' is the contrary of 'Socrates is well', but not even of such composite expressions is it true to say that one of the pair must always be true and the other false.
Now if Socrates exists, it is not necessary that one should be true and the other false, for when he is not yet able to acquire the power of vision, both are false, as also if Socrates is altogether non-existent.
Thus it is in the case of those opposites only, which are opposite in the sense in which the term is used with reference to affirmation and negation, that the rule holds good, that one of the pair must be true and the other false.
If, for example, two propositions p and q were self-evident, and it were also self-evident that p and q could not both be true, that would condemn self-evidence as a guarantee of truth.
Nevertheless, it is perhaps true that judgments having a high degree of subjective certainty are more apt to be true than other judgments.
We can DISBELIEVE the image-proposition expressed by "the window to the left of the door," and our disbelief will be true if the window is not to the left of the door.
I think if you can find out who you are, and be true to yourself, to me that is heroic.
To be true to the miracle of Vatican II, there is urgent need of recovering a new, fuller understanding of patristic, glad, tidings, above all the good news that we are not merely called but are the sons and daughters of God"' (1 John 3:1).
While this may be true, a poor match between investment policy and investment vehicles is a danger of any investment, not just index funds.
Sometimes we are "unintentionally misled," as when people deceive themselves and then faithfully report to us what they believe to be true.