No man ever made a great discovery without the exercise of the imagination.
When a man fails to see the truth of certain generally accepted views, there is no law compelling him to provoke animosity by announcing his dissent.
Imagination is not the exclusive appanage of artists, but belongs in varying degrees to all men.
Vehemence without feeling is but rant.
The only cure for grief is action.
Sincerity is moral truth.