Tocqueville delivered his dispassionate and penetrating judgment of the American experiment in his great work Democracy in America. No one, before or since, has written about the United States with such insight.
- John F. Kennedy
It is as if the fact that God is light, penetrating and manifesting everything, is so absolutely important that darkness and bondage can and must exist for the light's sake.
- Hans Urs von Balthasar
Nothing is small, in fact; any one who is subject to the profound and penetrating influence of nature knows this.
- Victor Hugo
Theology is an assault on the sin-distorted intellect; it is the obedience penetrating the realm of thought.
- Emil Brunner
Those who, rejecting Scripture, imagine that they have some peculiar way of penetrating to God, are to be deemed not so much under the influence of error as madness.