Your Personality Is a Triangle
Let’s compare the leader’s personality to an isosceles triangle. One side is the body: bones, flesh, blood, nerves, glands, posture—all things that make up physique and appearance. In other words, the physical “I”.
Another side of the triangle is the mind with its complicated processes of memorizing, reasoning, spelling, comprehension, and many others. The third side is temperament, including moods and emotions, and also attitudes.
All three sides are, of course, interdependent. Every time you speak, all three get busy. For example, when you say the simple word “well,” you move parts of your body; you use your mind; you reveal a mood. For the human voice never lacks feeling; neither does a gesture nor a posture.
~ James F. Bender, The Technique of Executive Leadership (1950)