Suicide sometimes proceeds from cowardice, but not always; for cowardice sometimes prevents it; since as many live because they are afraid to die, as die because they are afraid to live. ↗
We all know that any thing which retards in any way the free circulation of the sap, also prevents to a certain extent the formation of wood and leaves. ↗
There is one type of ideal woman very seldom described in poetry - the old maid, the woman whom sorrow or misfortune prevents from fulfilling her natural destiny. ↗
Nothing prevents us from being and remaining the exponents of a united humanity, when we have a country of our own. To fulfill this mission we do not have to remain literally planted among the nations who hate and despise us. ↗
A nobler example, because a less personal one, of the pinch of poverty, is when it prevents the accomplishment of some cherished scheme for the benefit of the human race. ↗
Back in 1983, the United States government approved the release of the first genetically modified organism. In this case, it was a bacteria that prevents frost on food crops. ↗