A person who is good for anything ought not to calculate the chance of living or dying; he or she ought only to consider whether in doing anything he or she is doing right or wrong- acting the part of a good person or a bad person.
Improvisation sometimes seemed more like jazz than acting, like verbal jazz, with the actors playing a theme back and forth, and then introducing another theme, incorporating it, somehow trying to work their way all together to a meaning of some kind, or at least a conclusion.
Juilliard definitely emphasizes the theater. They don't train - at all really - for film acting. It's mostly process-oriented, pretty much for the stage.
Of course, when I say that human nature is gentleness, it is not 100 percent so. Every human being has that nature, but there are many people acting against their nature, being false.