It's not the content, but the form of thought that counts.

my brain is my boss, and I'm my brain's worst employee

What do I think? I think it makes no difference what I think.

The most courageous act is still to think for yourself. Aloud.

Those who cannot attack the thought, instead attack the thinker.

A facility for quotation covers the absence of original thought.

I Think and think... And more thoughts line up to get processed.

Stay inside your head long enough and you may get trapped there.

The last thing one knows when writing a book is what to put first.

The revelation of thought takes men out of servitude into freedom.

If it's possible in the mind, then it's possible anywhere.

When you can't think clearly, climb to the top of your thoughts

When a head and a wall collide it's never the wall that breaks.

As long as she thinks of a man, nobody objects to a woman thinking.

How frail the human heart must be―a mirrored pool of thought.