No enemy is indeed so terrible as a man of genius.

Never apologize for showing feeling. When you do so, you apologize for the truth.

The secret of success is constancy of purpose.

Cleanliness and order are not matters of instinct; they are matters of education, and like most great things, you must cultivate a taste for them.

Nurture your mind with great thoughts, for you will never go any higher than you think.

Action may not always bring happiness; but there is no happiness without action.

Courage is fire, and bullying is smoke.

One secret of success in life is for a man to be ready for his opportunity when it comes.

Time is precious, but truth is more precious than time.

Never complain and never explain.

Finality is not the language of politics.

It’s not about who they are, but about God’s principle

Z is for Zillah who drank too much gin.

Twenty generations ago - around the year 1390 - you had 1 048 576 ancestors. In the 21st generation of your family that number will double again.

I enjoy being around people who disagree with me; and I enjoy being in non-political contexts and activities.

I don't want a trillion-dollar empire to run.

Parents should not let kids listen to my music if it's offensive. I wrote these songs for me.

90 percent of American schoolchildren are in public schools. And the emphasis on private schools and charter schools and parochial schools is not unimportant.

I think politicians know how to misrepresent data in order to support a political agenda. Politicians and the people that work for them - I should say - are expert at that.

I think people will always love a heavy Sabbath riff because it's fundamental to rock.

Buy less, choose well: that's the maxim. Quality not quantity. That's the most environmentally friendly thing you can do.