THE NEED OF A KNOWLEDGE OF HUMAN NATURE
It will be of great practical value to you to have a knowledge of the average man comprising your audience, his tastes, preferences, prejudices, and proclivities. The more you adapt your speech to such an average man, the more successful are you likely to be in influencing the entire audience.
Aim, therefore, to use words, phrases, illustrations, and arguments such as you think the average man will readily understand. Avoid anything which would cause confusion, distraction, or prejudice in his mind. Use every reasonable means to win his good will and approval.
Your speech is not a monolog, but a dialog, in which you are the speaker, and the auditor a silent tho questioning listener. His mind is in a constant attitude of interrogation toward you. And upon the degree of your success in answering such silent but insistent questions will depend the ultimate success of your speaking.
The process of persuading the hearer depends chiefly upon first being persuaded yourself. You may be devoid of feeling, and yet convince your hearers; but to reach their hearts and to move them surely toward the desired purpose, you must yourself be moved.
Your work as a public speaker is radically different from that of the actor or reciter. You are not impersonating some one else, nor interpreting the thought of another. You must above all things be natural, real, sincere and earnest. Your work is creative and constructive.