I do not want to found anything on the incomprehensible. I want to know whether I can live with what I know and with that alone.

I only know what I believe.

I desire only to know the truth, and to live as well as I can... And, to the utmost of my power, I exhort all other men to do the same... I exhort you also to take part in the great combat, which is the combat of life, and greater than every other earthly conflict.

I am the only person in the world I should like to know thoroughly.

For me the only things of interests are those linked to the heart

There is only one thing which interests me vitally now, and that is the recording of all that which is omitted in books.

Ultimately, I am all I can know.

I am the only person I would like to know thoroughly