The lecturer should give the audience full reason to believe that all his powers have been exerted for their pleasure and instruction.
A centre of excellence is, by definition, a place where second class people may perform first class work.
Nothing is too wonderful to be true if it be consistent with the laws of nature.
Gravity. Surely this force must be capable of an experimental relation to electricity, magnetism, and the other forces, so as to bind it up with them in reciprocal action and equivalent effect.
MacTutor