What convinces is conviction. Believe in the argument you're advancing. If you don't you're as good as dead. The other person will sense that something isn't there, and no chain of reasoning, no matter how logical or elegant or brilliant, will win your case for you.
Lyndon B. JohnsonHow incredible it is that in this fragile existence we should hate and destroy one another. There are possibilities enough for all who will abandon mastery over others to pursue mastery over nature. There is world enough for all to seek their happiness in their own way.
Lyndon B. JohnsonThe time has come when we cannot be so careless. Unless we do better, we may suffer through a stark emergency of the environment. We may create a hostile world: a world to bruise ourselves against; a world of sprawling cities, unplanned or badly planned; a world whose water is full of sludge, whose winds are full of soot; a world whose landscape has been totally neglected, stripped, marred, and wasted. All of this need not happen if we choose well, and particularly if we plan well and if we act well.
Lyndon B. Johnson