1.
As for butterflies, I can hardly conceive of one's attending upon you; but to question the congruence of the complement is vain, if it exists.
Marianne Moore
2.
Trust is congruence between what you say and what you do.
Peter Drucker
3.
Integrity is congruence between what you know, what you profess, and what you do.
Nathaniel Branden
4.
In a person who is open to experience each stimulus is freely relayed through the nervous system, without being distorted by any process of defensiveness.
Carl Rogers
5.
The concept of congruence in Euclidean geometry is not exactly the same as that in non-Euclidean geometry. ..."Congruent" means in Euclidean geometry the same as "determining parallelism," a meaning which it does not have in non-Euclidean geometry.
Hans Reichenbach