David Livingstone is one of the more well-known missionaries and explorers to southern Africa. Though he is also known for being contentious and a loose cannon, he related well with the native peoples and showed more respect for the continent than many of his peers.
If we keep our eyes on Christ, even the greatest sacrifice will pale in comparison to what we have gained through him.
Source: https://www.desiringgod.org/articles/i-never-made-a-sacrifice