Thought is free.

I would I could not think it: that thought is bounty's foe;Being free itself, it thinks all others so.

A thought which does not result in an action is nothing much, and an action which does not proceed from a thought is nothing at all.

Concerning God, free will and destiny: Of all that earth has been or yet may be, all that vain men imagine or believe, or hope can paint or suffering may achieve, we descanted.

Nimble thought can jump both sea and land

By heaven, he echoes me,As if there were some monster in his thoughtToo hideous to be shown.