 Initially unmoved by what he had witnessed he later, likely influenced by his brother Thomas’ passionate views concerning the immorality of slavery, came to abhor the institution and rendered practical assistance to the cause of abolition.His brother Thomas, along with William Wilberforce and other members of the Committee for Effecting the Abolition of the Slave Trade, had incorporated the Sierra Leone Company with a view to resettling certain free and formerly enslaved blacks on the west coast of Africa.Lieutenant Clarkson's charge was to secure among black communities of Nova Scotia, Canada, volunteers to settle in the area of the mouth of the Sierra Leone River.