After I turned 60, I worked more than anyone else.
I returned from the US in the morning and went to class in the afternoon without resting. When I looked at the statistics of what I had done in a year, I was surprised.
My standard for health was based on who worked more at the same age.
I have been living with the idea that 'moderate exercise is for health, and health is for work.'
About 10 years ago, I went to give a lecture for the people at Ilsan National Cancer Center.
The director there, Dr. Park Jae-gap, was a colon cancer specialist, and he asked me when I had my colon cancer test.
When I told him I had never received one before, he looked surprised.

--- pp.13~14

Whenever I think back on my experiences, I ask myself if it was fate that these things happened to me.
no.
So are these coincidences?
That's not it either.
The significance of those events is too important for that.
Was it the result of the freedom I chose?
That's not it either.
Then what is it?
I believe it is God's providence.
Providence comes from the experience of grace.
Just as there are laws in nature and order in our spiritual world, there is an order of grace in religious experience.
So, Christianity accepts the experience of grace, not miracles, as providence.

--- p.17

I often reminisce about my past.
It was Christmas, the last day of my first year of middle school.
Through the sermons of the two pastors, I realized who Jesus and God are who are with me and accepted them with faith.
Strangely enough, from then on, I began to think that I was not living my life alone, but that there was another Jesus with me.
That kind of life has continued for nearly 90 years.
Jesus became the master of my faith.

--- p.24

I gave up on my childhood dream of studying theology and becoming a pastor.
It was the beginning of a new dream: to continue my philosophy as a layperson and serve the church and the kingdom of heaven outside the church as an educator.
I had no choice but to choose a new path of faith and life.
It was the Lord's will.
I'm still on that path.
The change at that time became the birth of a new faith.

--- p.27

Through Tillich, I was helped to learn and realize a deeper and more systematic philosophical faith of human beings.
Through Niebuhr, I received advice on what needs to be resolved in modern society and Korean history.
Because a faith that fails to participate in history and social life loses its vitality.
Although Barth is considered a representative of systematic theology, he felt that it was too burdensome for a believer who personally accepted Christ through the Bible.
However, it is true that all three theologians played a significant academic role in establishing the philosophy, history, and doctrine that Christianity should have, and that as a layperson like me, they provided me with significant religious inspiration.
I can only be grateful.

--- p.37

I had more friends with academic and social connections than with religious ones, and they were more precious to me.
The friendship between Philip and Nathanael, which was connected through prayer, contained the desire to wait for the Messiah for the future of the nation and people in a religious society.
In contrast, the friendships I shared with my friends involved deep concerns about what to do for our people and country.
Of course, philosophy and ethics have universality for all mankind and the world.
However, at that time, the more urgent task was for our society and people to find and enjoy a humane life and happiness than for the world and humanity.

--- p.41

What matters is not the Christian church, but the spirit of Christ.
The teachings and truth of Jesus have been a ray of hope throughout history.
The religious nature of Christianity may have been abandoned, but Christ's values ​​and worldview have not been abandoned.
Christianity gave birth to humanism, and its fundamental spirit of humanity is an absolute value that must not be abandoned in any society.
Again, what matters is not the doctrines and authority of Christianity, but the truth of humanity.
Human dignity and human rights.
Because Christianity exists for human values ​​and the hope of history that transcends all religious values.
We must accept Christianity not as a national faith of Judaism, but as a faith for the universal values ​​of humanity: freedom, justice, and hope for humanity.

--- p.47