It is easier to denature plutonium than to denature the evil spirit of man.
A human being is part of a whole called by us the universe.
We believe that an informed citizenry will act for life and not for death.
Most teachers waste their time by asking question which are intended to discover what a pupil does not know whereas the true art of questioning has for its purpose to discover what pupils knows or is capable of knowing.
Learn from yesterday, live for today.
A conviction akin to religious feeling of the rationality or intelligibility of the world lies behind all scientific work of a high order.