In public speaking, we must ...

In public speaking, we must appeal either to the prejudices of others, or to the love of truth and justice. If we think merely of displaying our own ability, we shall ruin every cause we undertake.
In public speaking, we must appeal either to the prejudices of others, or to the love of truth and justice. If we think merely of displaying our own ability, we shall ruin every cause we undertake.

Quotes from the same author

Just as much as we see in others, we have in ourselves.
A proud man is satisfied with his own good opinion, and does not seek to make converts to it.
The love of liberty is the love of others; the love of power is the love of ourselves.
Men are in numberless instances qualified for certain things, for no other reason than because they are qualified for nothing else.
As is our confidence, so is our capacity.