First of all, freedom to teach the truth as he sees it is the
privilege and responsibility of the teacher, without which there is no hope of sound education. This is the heart of education's
guarantee for freedom and the guarantee against totalitarian threat to the democratic way of life. This does not preclude special arrangements between institutions and teachers, nor is this to be interpreted to mean that one has the right to be protected by this principle if he teaches the overthrow of the principle or of the system out of which it springs.