One does not become fully human painlessly - Rollo May

And did not Spinoza's refusing to flee from excommunication by his church and community mean the same inner battle of integrity, the same struggle for the power not to be afraid of aloneness, without which the noble Ethics, certainly one of the great works of all time, could not have been written?

Reason works better when emotions are present; the person sees sharper and more accurately when his emotions are engaged.

Intimacy requires courage because risk is inescapable. We cannot know at the outset how the relationship will affect us. Like a chemical mixture, if one of us is changed, both of us will be. Will we grow in self-actualization, or will it destroy us? The one thing we can be certain of is that if we let ourselves fully into the relationship for good or evil, we will not come out unaffected.