I had a strong presentiment during the first three years that I should never live through the enterprise, but it weakened as I came near to the end of the journey, and an eager desire to discover any evidence of the great Moses having visited these parts bound me, spell-bound me, I may say, for if I could bring to light anything to confirm the Sacred Oracles, I should not grudge one whit all the labour expended.
- David Livingstone