Few people can be happy unless they hate some other person, nation, or creed.

Young men, listen to an old man to whom old men listened when he was young.

Lukewarm people will serve God and others, but there are limits to how far they will go or how much time, money, and energy they are willing to give.

We are taught you must blame your father, your sisters, your brothers, the school, the teachers - but never blame yourself. It's never your fault. But it's always your fault, because if you wanted to change you're the one who has got to change.

I write to save someone's life, probably my own

When I get an idea I start at once building it up in my imagination. I change the construction, make improvements and operate the device in my mind. It is absolutely immaterial to me whether I run my turbine in my thought or test it in my shop. I even note if it is out of balance.