Man is not what he believes himself to be in his conscious decisions.

Anxiety may consist of the loss of psychological or spiritual meaning which is identified with one's existence as a self, i.e., the threat of meaninglessness.

Cruelty towards others is always also cruelty towards ourselves.

The basic anxiety, the anxiety of a finite being about the threat of non-being, cannot be eliminated. It belongs to existence itself.

For love ... is the blood of life, the power of reunion in the separated.

In those who rest on their unshakable faith, pharisaism and fanaticism are the unmistakable symptoms of doubt which has been repressed. Doubt is not overcome by repression but by courage. Courage does not deny that there is doubt, but it takes the doubt into itself as an expression of its own finitude and affirms the content of an ultimate concern. Courage does not need the safety of an unquestionable conviction. It includes the risk without which no creative life is possible.

Loneliness can be conquered only by those who can bear solitude.