A life of short duration...could be so rich in joy and love that it could contain more meaning than a life lasting eighty years.

A man's concern, even his despair, over the worthwhileness of life is an existential distress but by no means a mental disease.

An abnormal reaction to an abnormal situation is normal behavior.

Most men in a concentration camp believed that the real opportunities of life had passed. Yet, in reality, there was an opportunity and a challenge. One could make a victory of those experiences, turning life into an inner triumph, or one could ignore the challenge and simply vegetate, as did a majority of the prisoners.

A human being is not one thing among others; things determine each other, but man is ultimately self-determining. What he becomes-within the limits of endowment and environment-he has made out of himself.

Every human being has the freedom to change at any instant.

Sleep [is like] a dove which has landed near one's hand and stays there as long as one does not pay any attention to it.