If you've got the truth you can demonstrate it. Talking does... - Robert A. Heinlein, Stranger in a Strange Land

"But goodness alone is never enough. A hard, cold wisdom is required for goodness to accomplish good. Goodness without wisdom always accomplishes evil."

"Love is that condition in which the happiness of another person is essential to your own."

"A desire not to butt into other people's business is at least eighty percent of all human wisdom."

"But when they began handing out doctorates for comparative folk dancing and advanced fly-fishing, I became too stink in’ proud to use the title. I won’t touch watered whiskey and I take no pride in watered-down degrees."

"If you've got the truth you can demonstrate it. Talking doesn't prove it."