370.

Project Gutenberg EPUB3 edition Nietzsche, Friedrich Wilhelm and Kennedy, J. M. (John McFarland)
Open passage
To what extent the Thinker loves his Enemy.—Make it a rule never to withhold or conceal [pg 291] from yourself anything that may be thought against your own thoughts. Vow it! This is the essential requirement of honest thinking. You must undertake such a campaign against yourself every day. A victory and a conquered position are no longer your concern, but that of truth—and your defeat also is no longer your concern!

Source attribution

The Dawn of Day, Project Gutenberg eBook #39955

369. 371.