Joseph Dalton Hooker Quote

Plants, in a state of nature, are always warring with one another, contending for the monopoly of the soil,-the stronger ejecting the weaker,-the more vigorous overgrowing and killing the more delicate. Every modification of climate, every disturbance of the soil, every interference with the existing vegetation of an area, favours some species at the expense of others.

Flora Indica (ed. 1855)