I think I would rather cross the African continent again than undertake to write another book.

It is far easier to travel than to write about it.
I intended on going to Africa to continue my studies; but as I could not brook the idea of simply entering into other men's labors made ready to my hands, I entailed on myself, in addition to teaching, manual labor in building and other handicraft work, which made me generally as much exhausted and unfit for study in the evenings as ever I had been when a cotton-spinner.

The want of time for self-improvement was the only source of regret that I experienced during my African career.

The reader, remembering this, will make allowances for the mere gropings for light of a student who has the vanity to think himself "not yet too old to learn".

More precise information on several subjects has necessarily been omitted in a popular work like the present; but I hope to give such details to the scientific reader through some other channel..